Two trains moving in opposite directions at the speeds of 75 kmph and x kmph reach their destinations in 72 min and 32 min respectively after they pass each other. Find x.

112.5 is correct answer
let assume train A start prom A point an B from B point and they meet at point C
now distance BC is 75kmph*72min is 90 km
distance AB is x*32/60 in km
time taken by train A to complete AB is egual to time taken by train B to complete BC (they meet at B)
so,( 32*x/60)/75kmph is equal to 90/x
by solving x is equal to 112.5

166.25 kmph

Yhank u... Pushpesh pandey.

Thank you.....very much

I don't know how to solve this problem. Can anybody explain how to solve it..?

168.75