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

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 .
47.33 %

Problem: what is the diagonal of a square field whose perimeter is 64 m ?
16 √ 2 m

Problem: a train is 400 meter long is running at a speed of 60 km / hour . in what time will it pass a signal post ?

24 seconds