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

Input: Consider Input: Problem: a rectangle having length 105 cm and width 40 cm . if the length of the rectangle is increased by twenty five percent then how much percent the breadth should be decreased so as to maintain the same area .

Output: 19.23 %


Input: Consider Input: 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 ?

Output: 60 


Input: Consider Input: Problem: if 9 workers can build 9 cars in 9 days , then how many days would it take 7 workers to build 7 cars ?


Output: 9