TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: if 1 / ( x + 4 ) + 1 / ( x - 4 ) = 1 / ( x - 4 ) , what is the value of x ?

SOLUTION: 4

PROBLEM: Problem: a train 300 m long is running with a speed of 68 kmph . in what time will it pass a man who is running at 8 kmph in the same direction in which the train is going ?

SOLUTION: 18 sec .

PROBLEM: Problem: after 10 % of the inhabitants of a village disappeared , a panic set in during which 25 % of the remaining inhabitants left the village . at that time , the population was reduced to 5130 . what was the number of original inhabitants ?

SOLUTION:
7600