What is the ratio of the area of rectangle abcf to the area of rectangle abde?

a) 3/5
b) 4/4
c) 2/3
d) 5/7
e) 5/8

C) 2/3

Make a comparison, and do that by dividing the length if its a comparison of length or areas if its comparison of area and so on..

To find the length, use the distance formula.

Length of BC = 10
Length of BD = 15
10/15 = 2/3