Answer :
Billy had 40 apples. Mary took 5 of them from him. Billy sold 25 of them at the market, and threw away 10 of them because they went bad. how many apples does Billy have left?
Billy had 40 apples. Mary took 5 of them from him. Billy sold 25 of them at the market, and threw away 10 of them because they went bad. how many apples does Billy have left?