TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: the average weight of a group of boys is 30 kg . after a boy of weight 45 kg joins the group , the average weight of the group goes up by 1 kg . find the number of boys in the group originally ?

SOLUTION: 14

PROBLEM: Problem: find ( 7 x + 2 y ) / ( x - 2 y ) if x / 2 y = 3 / 2 ?

SOLUTION: 23

PROBLEM: Problem: how many integers n are prime numbers in the range 200 < n < 220 ?

SOLUTION:
1