The task is to generate the correct answer for a given math problem.

Problem: find the principle on a certain sum of money at 9 % per annum for 2 2 / 5 years if the amount being rs . 1120 ?
921.0

Problem: if | 5 x - 20 | = 100 , then find the sum of the values of x ?
8

Problem: a can do a piece of work in 28 days and b alone can do it in 10 days . b works at it for 5 days and then leaves . a alone can finish the remaining work in

14 days