Question

An envelope is 3 inches wide with a total area of 30 square inches. What is height?

Answer 1

The answer would be ten because 3 times ten is thirty and ten divided by three is ten

Answer 2

Since the TOTAL area is 30 square inches, what you would do is divide 30/3, since you already know how wide it is. And the answer is 10. The envelope is 10 inches tall.