Andrew M. answered • 10/25/16

Tutor

New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors

You set up a proportion:

13 is to 75 AS 20 is to x

This is written as:

13/75 = 20/x Solve for x

Cross multiply

13x = 20(75)

x = 20(75)/13 = 115.384

Our estimation would be the 20 pound cat should

have approximately 115 fleas.