instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: 30 pens and 75 pencils were purchased for 750 . if the average price of a pencil was 2.00 , find the average price of a pen .
answer:
20


question:
Problem: the total age of a and b is 12 years more than the total age of b and c . c is how many year younger than a
answer:
12


question:
Problem: a club wants to mix 25 pounds of candy worth $ 8.00 per pound with candy worth $ 5.00 per pound to reduce the cost of the mixture to $ 6.00 per pound . how many pounds of the $ 5.00 per pound candy should be used ?
answer:

50