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

Input: Consider Input: Problem: one fast typist type some matter in 4 hrs and another slow typist type the same matter in 6 hrs . if both do combine in how much time they will take to finish .

Output: 2 hr 24 mins


Input: Consider Input: Problem: a , b and c rents a pasture for rs . 730 . a put in 12 horses for 8 months , b 16 horses for 9 months and 18 horses for 6 months . how much should c pay ?

Output: 22


Input: Consider Input: Problem: hcf and lcm two numbers are 16 and 396 respectively . if one of the numbers is 36 , then the other number is ?


Output: 176