Samant bought a microwave oven and paid 10 % less than the original price. He sold it with 30% profit on the price he had paid.What percentage of profit did samant earn on the original price?	Choices.
A) 17%
B) 20%
C) 27%
D) 32%
E) None
Solution   Let the original price	=Rs.100.   Then, C.P	= Rs.90.   S.P =130% of Rs. 90	=Rs.(130/100×90)   = Rs.117.   Required percentage	= (117 - 100)= 
<gadget id="calculator">(117 - 100)</gadget>
<output>17</output>
17%.   17%nswer 17%
<result>A</result>
Samant bought a microwave oven and paid 10 % less than the original price. He sold it with 30% profit on the price he had paid.What percentage of profit did samant earn on the original price?