A & B two places. C & D are two people. C started from A and D started from B. When they meet each other in the way C traveled 18 m more than D. Then C takes 13 and half a minute and D takes 24 minutes to reach the other end. What was the distance between A & B. Ans. is 126 bt plz somebody tell the approach

Interview Candidate
Dec 4th, 2005
1
4131

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gurrala sireesha

Dec 8th, 2005

First assume time at which they meet each other as 't' ,now get the ratio of speeds of c & d which is 4:3.
speed of c:s1
speed of d:s2
s1*108=s2*104     (d=s*t 108sec taken by c to readch other end and 144 by d)
s1:s2=4:3
let x distance be covered by C and y distance covered by d when they meet each other at time 't'
    x/s1=y/s2   (t=d/s )
x/y=4/3
y=x-18 bcoz distance travelled by c when they met was 18m more than d
3x=4(x-18)
x=72
x=y+18
3(y+18)=4y
y=54
x+y=126