TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: a jar contains a mixture of ab in the ratio 4 : 1 . when 40 l of mixture is replaced with liquid b , ratio becomes 2 : 3 . how many liters of liquid a was present in mixture initially .

SOLUTION: 64

PROBLEM: Problem: how many integers n are prime numbers in the range 200 < n < 220 ?

SOLUTION: 1

PROBLEM: Problem: an aeroplane covers a certain distance of 670 kmph in 6 hours . to cover the same distance in 6 1 / 4 hours , it must travel at a speed of

SOLUTION:
643