amount needed how to formulate

Question

A living room is two times as long and one and one-half as wide as a bedroom. The amount of carpet needed for the living room is how many times greater than the amount needed for the bedroom?

Answer 1

The dimensions of the bedroom are L and w, and the area is Lw

the dimensions of the living room is 2L and 1.5w and the area is 3Lw

so three times the area