Question

An artificial lake is in the shape of a rectangle and has an area of 9/20 square mile. The width of the lake is 1/5 the length of the lake. What are the dimensions of the lake?

Answer 1

We know that the area of a rectangle can be written as: length x width

so:

l x (1/5) = 9/20

9/20 x 5/1 = 45/20, which can be reduced to 9/4

So the length is 9/4 miles