Question

Please please help <33

Joe had $100. He bought m books for n dollars each. How much money does he have left?

Answer 1

100-mn

Explanation:

He bought m books for n dollars each to know the amount of the books he bought,it means m×n=mn

He had $100 intially so to determine the amount left

100-the amount spent

100-mn

Therefore the answer is 100-mn