TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: the population of a city is 415600 . it increased by 25 % in the first year and decreased by 30 % in the second year . what is the population of the city at the end of second year ?

SOLUTION: 363650

PROBLEM: Problem: find the sum the difference between the compound and s . i . on a certain sum of money for 5 years at 20 % per annum is rs . 75 of money ?

SOLUTION: 1875

PROBLEM: Problem: a and b go around a circular track of length 600 m on a cycle at speeds of 36 kmph and 54 kmph . after how much time will they meet for the first time at the starting point ?

SOLUTION:
120