Question

Jana has a rectangular sheet of cardboard that measures 10 inches by 18 inches. what is the maximum number of 3*3 inch squares that she can form out of this cardboard?

A:15 B:17 C:18 D:19 E:20

Answer 1

C

Explanation:

The 10 inch sides will produce 10 / 3 = 3 squares and 1 inch left over.

The 18 inch sides will produce 18/3 = 6 squares with nothing left over.

The number of squares is 3 * 6 = 18

C