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

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

Ex Output:
3 : 5


Ex Input:
Problem: a rectangle having length 89 cm and width 34 cm . if the length of the rectangle is increased by eighty percent then how much percent the breadth should be decreased so as to maintain the same area .

Ex Output:
47.33 %


Ex Input:
Problem: an urn contains 10 black and 5 white balls . two balls are drawn from the urn one after the other without replacement . what is the probability that both drawn balls are black ?

Ex Output:

3 / 7