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

Input: Consider Input: Problem: solve the equation for x : 6 x - 47 + 3 x = 4 + 9 - x

Output: 


Input: Consider Input: Problem: excluding stoppages , the speed of the bus is 54 kmph and including stoppages , it is 36 kmph . for how many minutes does the bus stop per hr

Output: 20 mi


Input: Consider Input: Problem: sakshi can do a piece of work in 12 days . tanya is 20 % more efficient than sakshi . the number of days taken by tanya to do the same piece of work is ?


Output: 10