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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? a) 10 Km b) 15 Km c) 20 Km d) Data Insufficient
santosh vr
- Sep 29th, 2007
Let speed=stime=tspeed1=s+0.5time1=(4/5)tdist=(s+0.5)t *(0.8)speed2=s-0.5time2=t+2.5dist=(s-0.5)(t+2.5)st+2.5s-0.5t-1.25=st 2.5s-0.5t=1.25---------(1) 0.8st +0.4t=st =>0.2st=o.4t=>s=2---------(2) sub s=2
=>t=4.75/0.5=9.5dist=st=19ksrsbabu1
- Jul 22nd, 2006
since the distance travelled is same st=(s+0.5)(4/5)ton solvin u will get s=2there is one more equationst=(s-0.5)(t+5/2)substitute s=2 in the above eq and find 't' u will get s=2,t=7.5 therefore d=st=15kmans:15km
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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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A report consists of 20 sheets each of 55 lines and each such line consists of 65 characters. This report is retyped into sheets each of 65 lines such that each line consists of 70 characters. The % reduction in the number of sheets is closest to a) 20 b) 5 c) 30 d) 35
Navins
- Sep 6th, 2007
20 sheets 55 lines 65 characters?x?sheets?65 lines?70 characters=> x=(20*65*70)/65*55=25.45
sultan
- Jul 25th, 2006
20% is d ans20*55*65 = 71500 charsLet the number of sheets required be x here.Hence, x*65*70 = 71500 charsor x = 71500/65*70 = 15.71 = 16 sheets(approx)hence % reduction in sheets = 20%
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An aircraft takes off from A (72° N Lat, 40° E Long) at 2.00 Am local time to B (32° N Lat, 50° W Long). If the flying time is 10 hours what is the local time of landing at B?
chandradeepika
- May 28th, 2008
40+50 =90. for 1 deg 4 minutes, so for 90 (90*4)=360minutes =6hours 2am+10hours journey-6hours=6hours.so the answer is 6am.
dinil P adithya
- Oct 15th, 2006
total movment= 90dgree90*4=360min=6hrs...hense the plane s traveling frm est 2 west 2 am-6=8pmflyng time=10. localtime=8pm+10=6am
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Program Memory Occupied
The size of a program is N. And the memory occupied by the program is given by M = square root of 100N. If the size of the program is increased by 1% then how much memory now occupied?
santhakumar.mit
- Aug 28th, 2010
NOW N=N+N/100=101N/100M=SR OF 100N=>SO SR OF 100*101/100ans is SR OF 101N
SpandanaMohan
- May 21st, 2008
The memory size depends on the size of the program...If the program size is increased by 1%, then the memory size also changes according to size of the pgm...The new size of the program is n+n/100...and the size of memory is square root of 100(n+n/100)....
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Size of Bucket
The size of the bucket is N kb. The bucket fills at the rate of 0.1 kb per millisecond. A programmer sends a program to receiver. There it waits for 10 milliseconds. And response will be back to programmer in 20 milliseconds. How much time the program takes to get a response back to the programmer, after it is sent?
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Points Collection
Given a collection of points P in the plane, a 1-set is a point in P that can be separated from the rest by a line, i.e the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P). The minimum value of n1(P) over all configurations P of 5 points in the plane in general position (.i.e no three points in P lie on a line) isa) 3 b)...
abi
- Jul 25th, 2011
5.
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If three tapes are filling a tank of capacity of 500lit with speed of 30lit/sec, 48lit/sec and 36lit/sec. Find after how long time tank will fill?
500/114
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Find the root of given equation x-2/(x-1)=1-2/(x-2) if possible.
X = 0
Bhoomika sharma
- Dec 24th, 2008
Its,easy as we:are wid: x-1=2/(x-1)-2/(x-2)x-1=2(x-2)-2(x-1)/(x-1) *(x-2)x-1=-2/(x-1)(x-2)^3so, (x^2-2x-1)(x-2)=-2(x^3-2x^2-x)-(2x^2-4x+2)=-2(x^3-4x^2+3x-2)=-2=> x=0 or,x^2-4x+3=0=> x=1,x=3
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(loga)^2-(logb)^2 =?
Logab-loga/b
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In some game 139 members have participated every time one fellow will get bye what is the number of matches to choose the champion to be held?
138
MAHAVEER PATIL
- Feb 3rd, 2006
138 matches will delete low performances and last one will be championSO 138 MATCHES WILL DO
rajz_123
- Nov 28th, 2005
the answer is 138 matchesexplanation:since one player gets a bye in each round,he will reach the finals of the tournament without playing a match.therefore 137 matches should be played to detemine the...
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Aptitude Interview Questions
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