New York shop offers free food for solving math problems

A New York City convenience store cashier is going viral for allowing his customers to load up on free food and snacks by solving math problems. Alwan, a 20-year-old college student, started giving his customers five seconds to pick out whatever they wanted. He pays for all the products from his own pocket. This is his way of giving back to the community who mostly come from low-income households. 

Source: Samaa