TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: the average of first 5 multiples of 5 is

SOLUTION: 1

PROBLEM: Problem: gopi gives rs . 90 plus one turban as salary to his servant for one year . the servant leaves after 9 months and receives rs . 60 and the turban . find the price of the turban .

SOLUTION: 30

PROBLEM: Problem: a swimmer swims downstream 55 km and upstream 10 km taking 5 hours each time ; what is the speed of the current ?

SOLUTION:
4.5