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A family, planning a weekend trip, decides to spend not more than a total of 8 hours driving. By leaving early in the morning, they can average 40 miles per hour on the way to their destination. Due to the heavy Sunday traffic, they can average only 30 miles per hour on the return trip. What is the farthest distance from home they can plan to go?(a) 120 miles or less (b) Between 120and 140 miles (c) 140 miles(d) Between 140 and 160 miles (e) 160 miles or more
samir kumar roy
- Jul 7th, 2010
Since in 8 hour they will travel=8*40=320but due to traffic the will travel is 8*30=240 means 80 less than that. so btwn 240
haseeb
- Feb 23rd, 2007
Ans:120-140 miles
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If log(3.14) and log(3.16) are given, What is the value of log(3.15)?
gkrishna990
- Jul 4th, 2010
Log(3.14)=log(3.15-.01)=log(3.15)/log(.01)Having known the values of log(3.14) and log(.01) on cross multiplying we get log(3.15)
decentshabbir
- Oct 8th, 2008
Log(3.15) = log(3.14 + 0.01) log(3.15) = log(3.16 - 0.01) log(3.15)* log(3.15)= log(3.14) * log(0.01) * log (3.16) / log(0.01) log(3.15)* log(3.15)= log(3.14) * log (3.16) 2 * log(3.15)= (log(3.14) * log (3.16) ) log(3.15)= (log(3.14) * log (3.16) )/2
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Find how much younger is the new member
The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member?
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superstardlx- Member Since Aug-2008 | Aug 27th, 2008
let the members be a1,b,c,d,e,f,g,h,i,j .Let a2 be the younger member who replaces a1.
we have,
a1+b+c+......+j=a2+b+4+c+4+d+4+.....+j+4
=> a1+b+c+....+j=a2+b+c+..+j+36
hence,the oldest member is 36 years older than the new memberibulal
- Jun 9th, 2010
On the inclusion of the new member in the committee, there is no change in the average age of the committee members as it was 4 years back implying:The newly substitute in the committee is a younger c...
jamesjac
- Feb 8th, 2010
Four years back, Let the sum of the Ages of the 9 members of the committee( Who still continues ) be M. Let the age of the 10th memeber at that time be R. Hence the average age of the 10 m...
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Percentage of Rise in Temperature
The temperature at Chennai is given by the function: -t2/6+4t+12 where t is the elapsed time since midnight. What is the percentage rise (or fall) in temperature between 4.00 PM and 9.00 PM?(a) 23.5%
(b) 33%
(c) -32.5
(d) 20%
(e) 46%sid08harth
- May 27th, 2010
4pm is 16 hours from midnight..9pm is 21 hours from midnightfor 4pm...we get..-16*2/6+4*16+12 = 89for 9pm...we get..-21*2/6+4*21+12 = 71 (approx)% change = 18/89 *100 = 20% (Approx)
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File Transfer
A file is transferred from one location to another in 'buckets'. The size of the bucket is 10 kilobytes. The bucket gets filled at the rate of 0.0001 kilobytes per millisecond. The transmission time from sender to receiver is 10 milliseconds per bucket. After the receipt of the bucket the receiver sends an acknowledgement that reaches sender in 100 milliseconds. Assuming no error during transmission,...
jaykissan
- May 24th, 2010
To fill the bucket 100 sec, To transfer 1 bucket, 100.110 sec, To transfer n bucket, 100.11n, To transfer n kb,10.011n sec
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Balls
A sporting goods store ordered an equal number of white and yellow balls.The tennis ball company delivered 45 extra white balls,making the ratio of white balls to yellow balls 1/5 :1/6how many white balls did the store originally order for?a)450 b)270 c)225 d)none of these
anilkumar_cse
- Apr 1st, 2010
Given ratio is of white and yellow balls and it is 1/5:1/6.=> 6:5=> Therefore the total balls are in 11 parts.=> so the total balls delivered must be divided by 11.=> From the answers 450 + 45 is divided by 11, so the answer is a=>450
milindnsec
- Dec 30th, 2009
Let there is x no of each ball, when 45 white ball is added total number of white ball = x+45 now accordingly x+45x=...
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Ram is 27 year old then Mohan. After 7 years Ram's age is thrice as Mohan's age. Find Ram's age?
67/2
Rupeshil
- Apr 2nd, 2010
Let Mohan Age be x and Ram age be yAq- x+27=y--------------(1)After 7 years - 3(x+7)=y+7---------(2)From (1) and (2)x+27=3x+142x=13;x=6.5then Ram's age is 33.5
samreddy123
- Oct 11th, 2008
Ram's age is 67/2since R=27+Mafter 7years R+7=3(M+7)on solving both equations v get mohan's age as 13/2 and ram's age as 67/2
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How many 9 digit no.s are divisible by 7
A.1256b.1986c.1524d.1874
pravesh28
- Mar 28th, 2010
The 100000 first 9 digit number First number divisible by 7 is 1000006 (First term) Greatest 9 digit number is 9999999 and divisible by 7 is 9999997 (nth term) 9999997 equals 1000005+(n-1)7 Solving we get n equals 1285714
suchintya
- Jun 13th, 2008
128571428 is the correct answer that i copied from the above. But i apreciate that........Cheers
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Aptitude : find number of cats
A number of cats got together and decided to kill between them 999919 mice. Every cat killed an equal number of mice. Each cat killed more mice than there were cats. How many cats do you think there were?
ramsri_00
- Mar 22nd, 2010
Assume ,n=Number of cats and m=Number of mice per cat Given that,n*m=999919 and m>n Solution,n*m=(1000000-81)=1002-92=(100+9)*(100-9)=109*91=109*13*7Finally , n*m=109*13*7The followi...
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The temperature at Mumbai is given by the function: -t2/6+4t+12 where t is the elapsed time since midnight. What is the percentage rise (or fall) in temperature between 5.00PM and 8.00PM?
pravesh28
- Feb 27th, 2010
ans is 16 percentlet T eqals = -t^2/6+4*t+12 ( where t is elapsed time)rate of change in temp. eqals dT/dtdat is -4t^2-36t/(18+4*T)^2here time elapsed is 3putting the value t eqal 3we get 144/900so percentade change(144/900)*100ans 16 percent
Navins
- Sep 6th, 2007
Substitute 5 and 8 in the given equation for 5 you will get 21for 8 you will get 32asked that percentage fall or rise in temper 21/32*100 this will be the answer i.e 65%
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Power cable question
A power cable is to be run from a power plant on the bank of a river 900 meters wide to a factory that is located 3000 meters downstream on the opposite bank. If the cost of laying cable under water is Rs. 5 per meter and that of laying overhead on land is Rs. 4 per meter, find the point downstream where the cable is to cut across the river.
smokincigar07
- Feb 20th, 2010
<(3000-x)->C A------------------------------------------------------ ^ | ...
agkjack
- Nov 17th, 2009
I do not think it is complex. They give cost to plant the cable in ground and water both also
Let assume the length across the river is x;By given cost 5x=4*3000+5*900so x=3300 3300/2=1650so the point is 1650m from x axis, and 450m(half of distance bet banks) from y axis(450,1650) -
File transfer Question
A file is transferred from one location to another in ,buckets,. The size of the bucket is 10 kilobytes. The bucket gets filled at the rate of 0.0001 kilobytes per millisecond. The transmission time from sender to receiver is 10 milliseconds per bucket. After the receipt of the bucket the receiver sends an acknowledgement that reaches sender in 100 milliseconds. Assuming no error during transmission,...
smokincigar07
- Feb 20th, 2010
The speed at which a bucket filled is is 0.0001 kilobytes per millisecondi.e 0.1 kilobytes per secondfor Nkb time is 10N secondsNo. of buckets k=N/10 where k is the higher intiger(i.e if N/10=2.2 then...
prasadude
- Dec 13th, 2008
the speed at which a bucket filled is is 0.0001 kilobytes per millisecondthis is re-written as 0.1 kilobytes per secondi.e 100 seconds to fill a bucket which is 10kb in sizetransmission time is 10 mil...
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Dishonest Dealer
A dishonest dealer professes to sell his goods at cost price. But he uses a false weight and thus gains 300/47% for a kg, he uses a weight ofa)940gms b)947gms c)953gms d)960gms
smokincigar07
- Feb 20th, 2010
Dealer gains (300/47)% for a Kg.Let cost price is Rs100i.e he gains Rs(300/47) for a Kgi.e his selling price is Rs(100+300/47)Now If he used proper weight then selling price of Rs100 would account for...
Paarul
- Jun 30th, 2008
In these type of questions,formula used isgain%=(Error/(true value-error))*100so 300/47=error/(True value-error)*1003/47=error/(1000-error)on solving u get error =60 if error is sixty that means he is using a weight of 1000-60=940gm
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What is the equivalent compound ratio of 5:6::7:10::65
sazz619
- Feb 10th, 2010
Compound ration formula is a:b :: c:d :: e:f = a*c*e : b*d*fSo, 5*7*65/6*10*1=119:3
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Four Times as many Minutes
Fifty minutes ago if it was four times as many minutes past 3'o' clock, how many minutes is it to 6 'o' clock?
shreekanthss
- Feb 10th, 2010
difference between 3o clock and 6 o clock is 180 minutes.let the difference between current time and 6 o clock be x.so x+50+4x 1805x 180-50x 26so the current time is 5:34
shreekanthss
- Feb 10th, 2010
difference between 3o clock and 6 o clock is 180 minutes.so the difference between current time and 6 o clock be x.so x+50+4x 1805x 180-50x= 26answer is 26 minutes to 6 o clock
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Seaplane
A ship leaves on a long voyage. When it is 18 miles from the shore, a seaplane, whose speed is 10 times that of the ship is sent to deliver mail. How far from the shore does the seaplane catch up with the ship?
souravray_88
- Feb 7th, 2010
Let speed of the ship be 1 mile/hr. then speed of the seaplane is 10 miles/hr. so, to travel 18 miles he seaplane requires 1.8 hrs. and in this 1.8 hrs. the ship has travelled 1.8 miles more. Therefore seaplane catch up with the ship at a distance of (18+1.8)=19.8=20 miles approx. from the shore.
buddycoolcd
- May 22nd, 2008
Ans is 20milesexplanation:the seaplane travels 10 miles when ship travels 1 mile.hence the seaplane travels 20 miles from shore when the ship is at 20 miles
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Some are 1 kg weights and some are 2 kg weights. The sum of the weights is 260.What is the number of 1kg weights?
Ans : 40
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Answered by: Suman
- Jan 25th, 2007
There are a total of 150 weights. Let the number of 1 Kg weights be 'x'. Then the number of 2 Kg weights is '150 - x'. The sum of the weights is 260 Kg. ie [x * 1 + (150 - x) * 2] = 260. By solving this you will get 'x' as 40.
Ankita Mishra
- Jan 14th, 2010
Well this ans is absolutely fine...but i just want to make a slight changei.e.There are a total of 150 weights. Let the number of 1 Kg weights be 'x'. Then the number of 2 Kg weights is '150 - x'. The...
Suman
- Jan 25th, 2007
There are a total of 150 weights. Let the number of 1 Kg weights be 'x'. Then the number of 2 Kg weights is '150 - x'. The sum of the weights is 260 Kg. ie [x * 1 + (150 - x) * 2] = 260. By solving this you will get 'x' as 40.
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Moving Ship
A ship started from a port and moving 'I' miles per hour. And other ships strated from 'L' and moving with 'H' miles per hour.At the place where these two ships will meet |---|---|---|---|---|---|port G H I J K L
anon1987
- Dec 7th, 2009
Let us consider that the distance betwn each ports be 1 mile because all of them are same ..By the question we find that the speed of the ship frm the port is equal 2 distance from the port 2 the port...
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A ship leaves on a long voyage. When it is 18 miles from the shore, a seaplane, whose speed is 10 times that of the ship is sent to deliver mail. How far from the shore does the seaplane catch upo with the ship?
microelectronics
- Jan 3rd, 2010
Consider the speed of ship be a then the speed of plane is 10a; Let t be the time taken by the ship to travel 18 miles then a= 18/t;Speed of plane =180/t;Distance covered b...
uday reddy
- Jul 30th, 2006
Time taken is same for both the ships & seaplanetime =distance/speed.....if speed of ship=s then seaplane speed=10slet distance of ship be x then seaplane distance =18+xtherefore (x / s = (18 + x ) / 10s)...then we get x = 2 therfore total distance = 18+2=20ans 20
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In which of the system decimal number 184 is = to 1234?
arunava_nag
- Dec 31st, 2009
Base=54+3a+2a^2+a^3 = 180ie (a+1)^3 - a^2=181By virtue we can see 216 - 25 = 181Thus x=5
Aptitude Interview Questions
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