The task is to generate the correct answer for a given math problem.

Ex Input:
Problem: a number x is 5 times another number y . the percentage that y is less than x is

Ex Output:
80 %

Ex Input:
Problem: the malibu country club needs to drain its pool for refinishing . the hose they use to drain it can remove 60 cubic feet of water per minute . if the pool is 60 feet wide by 100 feet long by 10 feet deep and is currently at 80 % capacity , how long will it take to drain the pool ?

Ex Output:
800

Ex Input:
Problem: a start walking from a place at a uniform speed of 7 kmph in a particular direction . after half an hour , b starts from the same place and walks in the same direction as a at a uniform speed and overtakes a after 1 hour 48 minutes . find the speed of b .

Ex Output:
7.6 kmph