On a purchase of $118, a store offered a payment plan consisting of a $18 down payment and 12 monthly payments of $10 each. What percent of the purchase price, to the nearest tenth of a percent, did the customer pay in interest by using this plan?	Choose the correct answer:
A) 16.7%  B) 16.2%  C) 16.5%  D) 15.5%  E) 15.3%
12*10 + 18= 
<gadget id="calculator">12*10 + 18</gadget>
<output>138</output>
138   (18/118)* 100= 15.3   Answer : 15.3%
<result>E</result>
On a purchase of $118, a store offered a payment plan consisting of a $18 down payment and 12 monthly payments of $10 each. What percent of the purchase price, to the nearest tenth of a percent, did the customer pay in interest by using this plan?