The task is to generate the correct answer for a given math problem.

Q: Problem: a particular library has 75 books in a special collection , all of which were in the library at the beginning of the month . these book are occasionally loaned out through an inter - library program . if , by the end of the month , 80 percent of books that were loaned out are returned and there are 66 books in the special collection at that time , how many books of the special collection were loaned out during that month ?

A: 45
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Q: Problem: the length of a rectangle is increased by 15 % and its breadth is decreased by 20 % . what is the effect on its area ?

A: 920
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Q: Problem: at what rate of compound interest per annum will a sum of rs . 1200 become rs . 1348.32 in 2 years ?

A:
6 %
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