Mary's income is 50 percent more than Tim's income, and Tim's income is 40 percent less than Juan's income. What percent of Juan's income is Mary's income? Choose the correct choice from the following answers:
A) 124% B) 120% C) 96% D) 90% E) 64%
Juan's income = 100 (assume);   Tim's income = 60 (40 percent less than Juan's income);   Mary's income = 90 (50 percent more than Tim's income).   Thus, Mary's income (90) is 90% of Juan's income (100).   Answer: 90%.
<result>D</result>
Mary's income is 50 percent more than Tim's income, and Tim's income is 40 percent less than Juan's income. What percent of Juan's income is Mary's income?