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

Ex Input:
Problem: the average weight of 4 person ' s increases by 8.5 kg when a new person comes in place of one of them weighing 95 kg . what might be the weight of the new person ?

Ex Output:
129 kg


Ex Input:
Problem: a shopkeeper loses 15 % , if an article is sold for rs . 102 . what should be the selling price of the article to gain 20 % ?

Ex Output:
rs . 144


Ex Input:
Problem: set x consists of all two - digit primes and set y consists of all positive even multiples of 5 less than 100 . if the two sets are combined into one , what will be the range of the new set ?

Ex Output:

87