instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: a rectangle having length 89 cm and width 34 cm . if the length of the rectangle is increased by eighty percent then how much percent the breadth should be decreased so as to maintain the same area .
answer:
47.33 %


question:
Problem: how much interest will $ 10,000 earn in 9 months at an annual rate of 4 % ?
answer:
$ 300


question:
Problem: the difference between a number and its 3 - fourth is 100 . what is 25 % of that number ?
answer:

100