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

[Q]: 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 .
[A]: 47.33 %

[Q]: Problem: how many zeroes are there at the end of the number n , if n = 100 ! + 200 ! ?
[A]: 2

[Q]: Problem: a train passes a station platform in 30 sec and a man standing on the platform in 20 sec . if the speed of the train is 54 km / hr . what is the length of the platform ?
[A]:
60