Even after reducing the marked price of a transistor by Rs. 32, a shopkeeper makes a profit of 15%. If the cost price be Rs.320, what percentage of profit would he have made if he had sold the transistor at the marked price?
Select:
A) 18 %
B) 20 %
C) 25 %
D) 30 %
E) None
Sol.   C.P. = Rs. 320, Profit = 15%   S.P. Rs. [115/100 * 320] = Rs. 368. Marked price = Rs. (368 + 32) = Rs. 400.   ∴ Required profit% = [80/320 * 100= 
<gadget id="calculator">80/320 * 100</gadget>
<output>25</output>
25%.   Answer 25 %
<result>C</result>
Even after reducing the marked price of a transistor by Rs. 32, a shopkeeper makes a profit of 15%. If the cost price be Rs.320, what percentage of profit would he have made if he had sold the transistor at the marked price?