Discount
 The list price (marked price) of an article is Rs. 900 and is available at two successive discounts of 20% and 10%. The selling price of the article, in rupees, is :

 640
 648
 720
 738

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Given that , List price (marked price) of an article = Rs. 900
Single equivalent discount for a% and b% = a + b  a × b % 100
Here , a = 20 , b = 10%Single equivalent discount = 20 + 10  20 × 10 % 100
Single equivalent discount = (30 – 2)% = 28%
∴ S.P. of article = (100 – 28)% of Rs. 900
Correct Option: B
Given that , List price (marked price) of an article = Rs. 900
Single equivalent discount for a% and b% = a + b  a × b % 100
Here , a = 20 , b = 10%Single equivalent discount = 20 + 10  20 × 10 % 100
Single equivalent discount = (30 – 2)% = 28%
∴ S.P. of article = (100 – 28)% of Rs. 900
⇒ S.P. of article = 72% × Rs. 900S.P. of article = Rs. 900 × 72 = Rs. 648 100
 A retailer gets a discount of 40% on the printed price of an article. The retailer sells it at the printed price. His gain percent is

 40%
 55%

66 2 % 3  75%

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Let the marked price of the article be Rs. 100.
on discount of 40% ,∴ C.P. for the retailer = Rs. 100 × 60 = Rs. 60 100
Its S.P. = Rs. 100
∴ Profit = S.P.  C.P. = Rs. (100 – 60) = Rs. 40∴ Profit percent = Profit × 100 C.P.
Correct Option: C
Let the marked price of the article be Rs. 100.
on discount of 40% ,∴ C.P. for the retailer = Rs. 100 × 60 = Rs. 60 100
Its S.P. = Rs. 100
∴ Profit = S.P.  C.P. = Rs. (100 – 60) = Rs. 40∴ Profit percent = Profit × 100 C.P. ∴ Profit percent = 40 × 100 60 200 = 66 2 % 3 3
 A shopkeeper increases the price of an object by 40% and then sells it at 25% discount on the marked price. If the selling price of such an object be Rs. 2100, its cost price for the shopkeeper was

 Rs. 3000
 Rs. 1500
 Rs. 1750
 Rs. 2000

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Here , Selling price of an object = Rs. 2100
a = 40% , b = 25%
Using the given formula,Effective percentage = a + b + a × b % 100 Percentage effect = 40 − 25 − 40 × 25 % 100
Percentage effect = (15 – 10)% = 5%
If the C.P. of article be Rs. y,
Correct Option: D
Here , Selling price of an object = Rs. 2100
a = 40% , b = 25%
Using the given formula,Effective percentage = a + b + a × b % 100 Percentage effect = 40 − 25 − 40 × 25 % 100
Percentage effect = (15 – 10)% = 5%
If the C.P. of article be Rs. y,then, y × 105 = 2100 100 ⇒ y = 2100 × 100 = Rs. 2000 105
 A dealer is selling an article at a discount of 5% on the marked price. If the marked price is 12% above the cost price and the article was sold for Rs. 532, then the cost price is (in Rs.)

 500
 525
 505
 520

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Given that , S.P. of article = Rs. 532 , discount = 5%
Let the C.P. of article be Rs. y.∴ Marked price = Rs. 112y 100
According to the question,112y × 95 = 532 100 100
Correct Option: A
Given that , S.P. of article = Rs. 532 , discount = 5%
Let the C.P. of article be Rs. y.∴ Marked price = Rs. 112y 100
According to the question,112y × 95 = 532 100 100 ⇒ y = 532 × 10000 = Rs. 500 112 × 95
 A book seller allowed 10% discount on printed price. He gets 30% commission from publisher. His profit in per cent will be

 20

28 4 7  25

26 3 7

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Let the marked price of book be Rs. 100.
C.P. for the retailer = Rs. (100 – 30) = Rs. 70
On 10% discount , S.P. for the retailer = Rs. 90
Profit = S.P.  C.P. = 90  70 = Rs. 20∴ Profit percent = Profit × 100 C.P. for the retailer
Correct Option: B
Let the marked price of book be Rs. 100.
C.P. for the retailer = Rs. (100 – 30) = Rs. 70
On 10% discount , S.P. for the retailer = Rs. 90
Profit = S.P.  C.P. = 90  70 = Rs. 20∴ Profit percent = Profit × 100 C.P. for the retailer Profit percent = 20 × 100 = 28 4 % 70 7