Michael has $42. His brother has $17. Michael gives away half the money to his brother. His brother then buys 3 dollars worth of candy. How much money, in dollars, did his brother have in the end?
Michael gives away 42/2=<T>divide(42, 2)=21.0 dollars.
His brother then has 21+17=<T>add(21, 17)=38 dollars.
In the end, his brother has 38-3=<T>subtract(38, 3)=35 dollars.
