Doug's income is 40% of Marko's income and Jon's income is 50% of Doug's income. If Doug's income is $28000 a year, then

[BTGmoderatorLU]

Source: Princeton Review

Doug's income is 40% of Marko's income and Jon's income is 50% of Doug's income. If Doug's income is $28000 a year, then Marko's income is what percent of Jon's income?

A. 5%
B. 14%
C. 20%
D. 175%
E. 500%

The OA is E

[Scott@TargetTestPrep]

Source: Princeton Review

Doug's income is 40% of Marko's income and Jon's income is 50% of Doug's income. If Doug's income is $28000 a year, then Marko's income is what percent of Jon's income?

A. 5%
B. 14%
C. 20%
D. 175%
E. 500%

The OA is E

Solution:

We are given that Doug’s income is $28,000. We can create the following equations in which j = Jon’s income and m = Marko’s income:

28,000 = 0.4m

70,000 = m

AND

j = 0.5(28,000)

j = 14,000

Marko’s income, expressed as a percentage of Jon’s income, is 70,000/14,000 = 5 = 500%

Answer: E