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

Input: Consider Input: Problem: two numbers are in the ratio 3 : 5 . if 9 be subtracted from each , they are in the ratio of 1 : 2 . the first number is :

Output: a ) 27

Input: Consider Input: Problem: 1370 , x , 1070 , - 180 , - 6430

Output: 1320

Input: Consider Input: Problem: a car runs at the speed of 25 km per hour when not serviced and runs at 75 kmph when serviced . after servicing the car covers a certain distance in 5 hours . how much time will the car take to cover the same distance when not serviced ?
Output: 7 hours