instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: a cycle is bought for rs . 900 and sold for rs . 1080 , find the gain percent ?
answer:
20 %


question:
Problem: if p and q are both odd prime numbers andp < q , then how many different positive integer factors does 2 pqhave ?
answer:
8


question:
Problem: at their respective rates , pump a , b , and c can fulfill an empty tank , or pump - out the full tank in 2 , 3 , and 6 hours . if a and b are used to pump - out water from the half - full tank , while c is used to fill water into the tank , in how many hours , the tank will be empty ?
answer:

3 / 4