x takes 3 hours more than y to walk 30 km. but if x doubles his pace, he is ahead of y by one and a half hours. find their speeds of walking.
Hi! consider x = A and y= B
Let the speed of A and B be x km/hr and y km/hr respectively.
We know that,
Given, time taken by A = time taken by B + 3 hr
∴ Time taken by A 3 hr = Time taken by B
Solving (1) and (2), we get
Putting the value of y in equation (1), we get
Thus, the speed of A is and speed of B is 5 km/hr.