Question

X and Y are two towns. A man goes from town X to town Y at an average speed of 30 km per hour and returns at the average speed of 20 km per hour. Find the distance between the two towns if the man takes 10 hours on the whole.

Answer 1

let ,
time taken to travel ,at the speed of 30km/h = x hr
and the time taken to travel at the speed of 20km/h = (10-x)hr
A/Q.
30×x = 20 (10-x)
=》30x = 200-20x
=》30x-20x = 200
=》10x= 200
=》x=200/10
therefore x=20
hence ,the distance between X and Y town is 20 km...



hope this helps!!!