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

Ex Input:
Problem: how many liters of a 40 % iodine solution need to be mixed with 35 liters of a 20 % iodine solution to create a 32 % iodine solution ?

Ex Output:
102


Ex Input:
Problem: i had rs . 10000 with me . out of this , money i lent some money to a for 2 years at 15 % simple interest . i lent the remaining money to b for an equal number of years at 18 % simple interest . after 2 years , i found that a had given me rs . 360 more as interest as compared to ( b ) the amount of money which i had lent to b must have been

Ex Output:
4000


Ex Input:
Problem: if y > 0 , ( 6 y ) / 20 + ( 3 y ) / 10 is what percent of y ?

Ex Output:

60 %