TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: pipe a can fill a tank in 6 hours . due to a leak at the bottom , it takes 10 hours for the pipe a to fill the tank . in what time can the leak alone empty the full tank ?

SOLUTION: 15

PROBLEM: Problem: what decimal fraction is 90 ml of a litre ?

SOLUTION: . 09

PROBLEM: Problem: the number of boxes in a warehouse can be divided evenly into 7 equal shipments by boat or 28 equal shipments by truck . what is the smallest number of boxes that could be in the warehouse ?

SOLUTION:
28