On a purchase of $130, a store offered a payment plan consisting of a $30 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 one:
A) 23.5%
B) 24.5%
C) 23.1%
D) 25.5%
E) 26.5%
12*10 + 30= 
<gadget id="calculator">12*10 + 30</gadget>
<output>150</output>
150.   (30/130)* 100= 23.1   Answer : 23.1%
<result>C</result>
On a purchase of $130, a store offered a payment plan consisting of a $30 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?