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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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Percent
Amal bought 5 pens, 7 pencils and 4 erasers. Rajan bought 6 pens, 8 erasers and 14 pencils for an amount which was half more than what Amal had paid. What % of the total amount paid by Amal was paid for pens?
mahaeie
- Nov 15th, 2010
5*pen+7*pencil+4*eraser=x;6*pen+14*pencil+8*eraser=x+0.5x=1.5x;7*pencil=x-5*pen-4*eraser;--> eq114*pencil=1.5x-6*pen-8*eraser=> 7*pencil=(1.5*x-6*pen-8*eraser)/2;-->eq2x-5*pen-4*eraser=0.75x-...
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Highway
If A is traveling at 72 km per hour on a highway. B is traveling at a speed of 25 meters per second on a highway. What is the difference in their speeds in meters per second?
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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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The value of ¾ + 5 / 36 + 7 / 144 + …….+17 / 5184 + 19 / 8100 is??
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A bus started from bustand at 8.00a m and after 30 min staying at destination, it returned
A bus started from bustand at 8.00a m and after 30 min staying at destination, it returned back to the bustand. the destination is 27 miles from the bustand. the speed of the bus 50 percent fast speed. at what time it returns to the bustand
chandradeepika
- Jun 11th, 2008
A bus cover 27miles with 18mph in=27/18 =1hr30min and it wait at stand=30min.after this speed of return increases by 50%. so 50% of 18mph=9mphtotal speed of returning=18+9=27then in return it take 27/27=1hr.then total time in journey=1+1.30+0.30=3hrso it will come at 8+3hr=11am.so ans=11am
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If the product of the 3 consecutive integers is 210, then the sum of the two smaller integers?
madhurimasridhar
- Mar 5th, 2009
Product is 210... so one of the integers must be 5 or 10.They are 5 6 7 or 3 4 5 or 10 9 8 or 10 11 12
Possible ans is 5 6 7 bcoz no other option gives the product which is mentioned
in the data.Sum of two smaller integers is 5+6=11.so ans is 11chandradeepika
- May 27th, 2008
the three consecutive integers be x,y and z.given: xyz=210. the unit place ends with 0. so it must be a multiple of 5,10,...if it is a multiple of 10 means it must lead to a large number because 10*9*...
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3/4+5/36+7/144+..........+17/5784+19/8100 is?
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Glass
100 glasses are there.A servant has to supply glasses to a person.If he supplies the glasses without any damage he will get 3 paise.Otherwise he will loose 3 paise.At the end of supplying 100 glasses if he gets 270 paise.How many glasses were supplied safely?ANS: 95 i want the steps to solve this!
thirumalaiprabu
- Dec 3rd, 2009
Totally 270 paise he is having finally. 270/3=90so minimum 90 glasses of good quality he would have supplied. Remaining 10 are there. Only 270 paise he is having. We need to equalize the remaining 10 ...
SpandanaMohan
- May 29th, 2008
Let the number of glasses tat are supplied without any damage be 'x' and the number of glasses supplied with damage be 'y'....He gets 3ps for every glass tat he supplies without any da...
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Circular Track
In a circular race track of length 100 m, three persons A, B and C start together. A and B start in the same direction at speeds of 10 m/s and 8 m/s respectively. While C runs in the opposite at 15 m/s. When will all the three meet for the first time on the after the start? with steps
pramoth
- Dec 25th, 2011
The three will never meet at the same place after they start because two people are running in the same direction with different speeds. so C will meet either A or B. but not both.
souravray_88
- Feb 7th, 2010
In such type of questions get your answers from options itself.Take 1st option and calculate distance travelled by each person so it will be (4*10)=40m for A,(4*8)=32,(4*15)=60, so here distance trave...
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A traveler walks a certain distance
A traveler walks a certain distance. Had he gone half a kilometer an hour faster , he would have walked it in 4/5 of the time, and had he gone half a Kilometer an hour slower, he would have walked 2 ½ hr longer. What is the distance?
RAJUTHAI
- Mar 8th, 2012
Ans:15km
solution:
speed(s)*time(t)=distance(d)
walked 1/2km with time 4/5
(s+0.5)((4/5)t)=d --->(1)
1/2km an hour slow, walked 2and half hr long
(s-0.5)(t+2.5)=d ----->(2)
solving (1) & (2)
we get s=2
t=7.5
d=2*7.5=15kmAkshujain
- Oct 25th, 2009
D = 15 kmsx = speed in km/hry = time takend / x = y - eq1d / x + .5 = (4/5)*y - eq 2d / x - .5 = 2.5 + y - eq 3 solving these three equation we get d = 15 x = 2 y = 7.5
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The value of ¾ + 5 / 36 + 7 / 144 + …….+17 / 5184 + 19 / 8100
sreenath91
- Jun 23rd, 2008
U can writre the statement as1-(1/4)=3/41/4-(1/9)=5/361/9-(1/16)=7/144so continuing like that we get 1-(1/100)=.99
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Local Time of Landing
An aircraft takes off from A (89o N Lat, 10o E Long) at 2.00 AM local time to B (32o N Lat, 70o W Long). If the flying time is 10 hours what is the local time of landing at B?(a) 5.40 AM
(b) 4.00 AM
(c) 6.40 AM
(d) 7.00AM
(e) 8.00AM
harsha1000
- Dec 11th, 2010
In this problem longititude is unwanted.only latitude is what thats going to determine.so,70-10=60' for each 1' change it takes 5 mins,so 60'*5=300 mins2+10hrs=12 a.m localtime.?12-5hrs=7 a.m
pravesh28
- Apr 2nd, 2010
ans----cmagnitude difference is 80 digreefor this duration time change 80*4 eqals 320 minute5 hour 20 minutefor 12 hour journey12- 5hour 20that is 6 hour 40 minute ans
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Sum of Four Digit Numbers
What is the sum of all the four digit numbers formed using the digits 0, 1, 2 and 3. None of the two digits should be repeated?
Kapil Kapoor
- Aug 27th, 2010
Process of solvingFrom these four digits '0' cannot be at first place to form four digit number so we have 1, 2, or 3 can be at thousand's place keeping one digit at thousand place can have 6 differen...
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Percentage Side Increase
If the area of a square has increased by 60%, by what percentage has its side increased?
levteck
- Sep 13th, 2010
Answer, about 26%square of 10cm by 10cm equal 100cm2for it to increase by 60% then the new size is 160cm2so each side would now be about 12.6cm by 12.6 cm then each side went from 10 to 12.6cm for an increase of about 26%
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Age of a Person increased by 10%
Age of a person increased by 10% from last year. What is the current ratio from last year.a.1:10 b.11:10c.11:12Which one is correct?
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Find the Speed
An Engine length 1000 m moving at 10 m/s. A bird is flying from engine to end with x sec and coming back at 2x sec. Take total time of bird traveling as 187.5s. Find the to and fro speed of the bird.
Yongjie Liang
- Jul 19th, 2023
support time cut ratio 1:2, suppose that bird from begining to end fily 62.5s, so the train will levave 1000-625=375 m behind the original point. bird needs 375/62.5=6m/s will hit the end. now move t...
Sandhya.Kishan
- May 28th, 2012
Distancetravelled by the bird=2000m
time taken=187.5 sec
=375/2 sec
speed is in the ratio of 1:2
dividing the time in the ratio of 1:2
time to=375/2(2/3)=125 sec
speed=distane/time=1000/125=8 m/sec
speed in thefro direction=16m/sec -
Prime Numbers
What is the probability of getting 2 prime nos. from 1 to 20?
Mark Haynes
- Feb 13th, 2012
I hit the send before I was finished, to continue: since the random picking of a number under 20 is still a independent event, the chance for picking a 2nd prime number is still the same... 40%
Mark Haynes
- Feb 13th, 2012
Given that there are 8 Prime Numbers under 20, and if the limit is only random numbers under 20 then there is a 40% chance of getting a prime number.
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Subject Marks
There are 5 Sub with equal high marks. Mark scored by a boy is 3:4:5:6:7 (Not sure). If his total aggregate if 3/5 of the total of the highest score, in how many subjects has he got more than 50%?
Tanvi
- Nov 17th, 2012
It is cleanly mentioned in question that he has scored 3 subjects
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Seat Arrangement
How many types can arrange to seat 4 men & 4 woman on a circuler table alternate?
ytk.. di!
- Jan 29th, 2012
3! x 4! = 144
Aptitude Interview Questions
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