A case of 12 rolls of paper towels sells for $9. The cost of one roll sold individually is $1.What is the percent T of savings per roll for the 12-roll package over the cost of 12 rolls purchased individually?	Choices:
A) 9%
B) 11%
C) 15%
D) 25%
E) 90%
Cost of 12 paper towels individually = 1*12= 
<gadget id="calculator">1*12</gadget>
<output>12</output>
12   Cost of a set of 12 paper towels= 9   Cost of one roll = 9/12 = 3/4= 
<gadget id="calculator">3/4</gadget>
<output>3/4 = around 0.75</output>
0.75   Savings per roll= 1-.75= 
<gadget id="calculator">1-.75</gadget>
<output>0.25</output>
0.25   % of savings is T= .25/ 1 *100= 
<gadget id="calculator">.25/ 1 *100</gadget>
<output>25</output>
25% 25% is the answer.
<result>D</result>
A case of 12 rolls of paper towels sells for $9. The cost of one roll sold individually is $1.What is the percent T of savings per roll for the 12-roll package over the cost of 12 rolls purchased individually?