x is 20% more than z and y is 80% more than z. Find x:y.

A. 1:4
B. 3:4
C. 1:3
D. 2:3

x = z+(20/100)z = 1.2z y = 1.8z x:y = 1.2z:1.8z = 12:18 = 2:3