instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: the area of a triangle is with base 10 m and height 5 m ?
answer:
25

question:
Problem: a man buys 60 pens at marked price of 46 pens from a whole seller . if he sells these pens giving a discount of 1 % , what is the profit percent ?
answer:
29.13 %

question:
Problem: a certain number when divided by 39 leaves a remainder 20 , what is the remainder when the same number is divided by 13 ?
answer:
7