Last week Vartan spent 20 percent of his wages on recreation. This week, his wages are 20 percent less than last weekʼs wages and he spent 40 percent of his wages on recreation. The amount he spends on recreation this week is what percent of the amount he spent on recreation last week?
Choose the correct choice from the following
A) 150 %
B) 170 %
C) 175 %
D) 160 %
E) 180 %

Rationale: "say vartan ' s wages last week were $ 100 , so he spent 0.20 * 100 = $ 20 on recreation ; this week ' s wages is 0.8 * 100 = $ 80 , so he spends 0.4 * 80 = $ 32 on recreation ; 32 / 20 = 1.6 , hence the amount he spends on recreation this week is 160 % of the amount he spent on recreation last week : 20 * 1.6 = 32 answer : d"
Answer: D