151. If the shopkeeper sells an item at Rs 960 which is marked as Rs 1200, what is the discount he is offering ?

1. 1. 25 percent

   
   
   

   2. 12 percent

   
   
   

   3. 20 percent

   
   
   

   4. 28 percent

   
   
   

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1. View Hint View Answer Discuss in Forum

   Discount = Rs. (1200 – 960) = Rs. 240
   If the rate of discount be x%, then
   x% of 1200 = 240
   

   ⇒	1200 × x	= 240
   	100

   
   ⇒  12x = 240
   

   ⇒  x =	240	= 20%
   	12

   Correct Option: C

   Discount = Rs. (1200 – 960) = Rs. 240
   If the rate of discount be x%, then
   x% of 1200 = 240
   

   ⇒	1200 × x	= 240
   	100

   
   ⇒  12x = 240
   

   ⇒  x =	240	= 20%
   	12

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152. A photographer allows a discount of 10% on the advertised price of a camera. The price (in Rs.) that must be marked on the camera, which cost him Rs. 600, to make a profit of 20% would be

1. 1. 650

   
   
   

   2. 800

   
   
   

   3. 700

   
   
   

   4. 850

   
   
   

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1. View Hint View Answer Discuss in Forum

   Let the marked price of camera be Rs. x.
   According to the question,
   (100 – 10)% of x = 120% of 600
   ⇒  x × 90 = 600 × 120
   

   ⇒  x =	600 × 120	= Rs. 800
   	90

   Correct Option: B

   Let the marked price of camera be Rs. x.
   According to the question,
   (100 – 10)% of x = 120% of 600
   ⇒  x × 90 = 600 × 120
   

   ⇒  x =	600 × 120	= Rs. 800
   	90

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153. What was the rate of discount if a computer with marked price ₹ 30,000 was sold for ₹ 28,000 ?

1. 1. 20%

   
   
   

   2. 7	1	%
      	2

   
   
   

   3. 6	2	%
      	3

   
   
   

   4. 15%

   
   
   

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1. View Hint View Answer Discuss in Forum

   Discount
   = Rs. (30000 – 28000)
   = Rs. 2000
   If the rate of discount be x%, then
   

   30000 ×	x	= 2000
   	100

   
   ⇒  300x = 2000
   

   ⇒  x =	2000	=	20	= 6	2	%
   	300		3		3

   Correct Option: C

   Discount
   = Rs. (30000 – 28000)
   = Rs. 2000
   If the rate of discount be x%, then
   

   30000 ×	x	= 2000
   	100

   
   ⇒  300x = 2000
   

   ⇒  x =	2000	=	20	= 6	2	%
   	300		3		3

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154. Peter bought an item at 20% discount on its original price. He sold it with 40% increase on the price he bought it. The new sale price is greater than the original price (in per cent) by

1. 1. 10

   
   
   

   2. 8

   
   
   

   3. 7.5

   
   
   

   4. 12

   
   
   

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1. View Hint View Answer Discuss in Forum

   Let the original price of item be Rs. 100.
   C.P. for Peter = Rs. 80
   

   S.P. for Peter = Rs.		80 × 140		= Rs. 112
   		100

   
   

   ∴  Required per cent =	(112 − 100) × 100	= 12%
   	100

   
   

   Correct Option: D

   Let the original price of item be Rs. 100.
   C.P. for Peter = Rs. 80
   

   S.P. for Peter = Rs.		80 × 140		= Rs. 112
   		100

   
   

   ∴  Required per cent =	(112 − 100) × 100	= 12%
   	100

   
   

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155. A discount of 15% on one article is the same as discount of 20% on a second article. The costs of the two articles can be :

1. 1. ₹ 85, ₹ 60

   
   
   

   2. ₹ 60, ₹ 40

   
   
   

   3. ₹ 40, ₹ 20

   
   
   

   4. ₹ 80, ₹ 60

   
   
   

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1. View Hint View Answer Discuss in Forum

   Check through options
   

   15% of 80 =	80 × 15	= 12
   	100

   
   

   and 20% of 60 =	60 × 20	= ₹ 12
   	100

   
   Therefore, 15% of 80 and 20% of 60 are same. Hence the cost prices should be ₹ 80 and ₹ 60.

   Correct Option: D

   Check through options
   

   15% of 80 =	80 × 15	= 12
   	100

   
   

   and 20% of 60 =	60 × 20	= ₹ 12
   	100

   
   Therefore, 15% of 80 and 20% of 60 are same. Hence the cost prices should be ₹ 80 and ₹ 60.

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