Last week Vartan spent 15 percent of his wages on recreation. This week, his wages are 10 percent less than last weekʼs wages and he spent 30 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 most appropriate option:
A) 100% B) 160% C) 180% D) 200% E) 220%
Say Vartan's wages last week were $100, so he spent  0.15*100= 
<gadget id="calculator"> 0.15*100</gadget>
<output>15</output>
$15 on recreation;   This week's wages is 0.9*100= 
<gadget id="calculator">0.9*100</gadget>
<output>90</output>
$90, so he spends   0.3*90= 
<gadget id="calculator">  0.3*90</gadget>
<output>27</output>
$27 on recreation;   27/15= 
<gadget id="calculator">27/15</gadget>
<output>9/5 = around 1.8</output>
1.8, hence the amount he spends on recreation this week is 180% of the amount he spent on recreation last week:   15*1.8= 
<gadget id="calculator">  15*1.8</gadget>
<output>27</output>
27.   Answer: 180%.
<result>C</result>
Last week Vartan spent 15 percent of his wages on recreation. This week, his wages are 10 percent less than last weekʼs wages and he spent 30 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?