Ali has $480. He spent half of it on food, and then he spent a third of what was left on a pair of glasses. How much money did he have left?
Ali spent 480/2=$<T>divide(480, 2)=240.0 on food.
After buying the food, Ali had 480-240=$<T>subtract(480, 240)=240 left.
He spent 240/3=<T>divide(240, 3)=80.0 dollars on a pair of glasses.
He had 240-80=$<T>subtract(240, 80)=160 left.
