TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: a certain elevator has a safe weight limit of 2,000 pounds . what is the greatest possible number of people who can safely ride on the elevator at one time with the average ( arithmetic mean ) weight of half the riders being 200 pounds and the average weight of the others being 230 pounds ?

SOLUTION: 9

PROBLEM: Problem: a and b can do a piece of work in 7 days . with the help of c they finish the work in 5 days . c alone can do that piece of work in ?

SOLUTION: 30 days

PROBLEM: Problem: the sum of two numbers is 20 and the sum of their squares is 140 . find the product of the two numbers .

SOLUTION:
130