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

Example Input: Problem: if shares of two persons in profits are rs . 600 and rs . 1000 then ratio of their capitals is
Example Output: 3 : 5

Example Input: Problem: a starts business with rs . 3500 and after 8 months , b joins with a as his partner . after a year , the profit is divided in the ratio 2 : 3 . what is b â € ™ s contribution in the capital ?
Example Output: 15750

Example Input: Problem: a thief goes away with a santro car at a speed of 40 kmph . the theft has been discovered after half an hour and the owner sets off in a bike at 60 kmph when will the owner over take the thief from the start ?
Example Output:
e )