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

Input: Consider Input: Problem: what is the sum of the odd integers from 55 to 75 , inclusive ?

Output: 71


Input: Consider Input: Problem: a reduction of 20 % in the price of oil enables a house wife to obtain 4 kgs more for rs . 600 , what is the reduced price for kg ?

Output: 30


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


Output: