TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: the s . i . on a certain sum of money for 2 years at 8 % per annum is half the c . i . on rs . 4000 for 2 years at 10 % per annum . the sum placed on s . i . is ?

SOLUTION: 262

PROBLEM: Problem: a can do a piece of work in 80 days . he works at it for 10 days b alone finishes the remaining work in 42 days . in how much time will a and b working together , finish the work ?

SOLUTION: 30

PROBLEM: Problem: to produce an annual income of rs . 1200 from a 15 % stock at 90 , the amount of stock needed is :

SOLUTION:
s . 10,000