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7.	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?
	A.  17%
	B.  20%
	C.  27%
	D.  32%

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)% =17%.

8.	If a man reduces the selling price of a fan from Rs.400 to Rs.380, his loss increases by 2%. The cost price of the fan is
	A.  Rs. 480
	B.  Rs. 500
	C.  Rs. 600
	D.  Rs. 1000

Solution

Let C.P be Rs.x Then, 2% of x =(400 - 380) =20 x/50 = 20 x=1000.

9.	A shopkeeper fixes the marked price of an item 35% above its cost price. The percentage of discount allowed to gain 8% is
	A.  20%
	B.  27%
	C.  31%
	D.  43%

Solution

Let C.P =Rs.100 Then, marked price =Rs.135, S.P =Rs.108. Discount % =(27/135×100)% = 20%