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

Input: Consider Input: Problem: a car salesman earns a base salary of $ 1000 per month plus a commission of $ 200 for each car he sells . if the car salesman earned $ 2000 in march , how many cars does he need to sell in april in order to double his march earnings ?

Output: 15


Input: Consider Input: Problem: tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random . what is the probability taht the ticket drawn has a number which is a multiple of 3 or 5 ?

Output: 9 / 20


Input: Consider Input: Problem: a wall photo 2 inches wide is placed around a rectangular paper with dimensions 8 inches by 12 inches . what is the area of the wall photo , in square inches ?


Output: 96', 'b ) 86', 'c ) 108', 'd ) 144', 'e ) 118'