Discount
 Applied to a bill for ₹ 1,00,000 the difference between a discount of 40 % and two successive discounts of 36 % and 4 % is :

 Nil
 ₹ 1,440
 ₹ 2,500
 ₹ 4,000

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As we know the formula for two successive discount.
Successive discounts of D_{1} % and D_{2} % is overall equals to = D_{1} + D_{2} − D_{1} × D_{2} % 100
Where D_{1} = Discount 1 and D_{2} = Discount 2Successive discounts of 36 % and 4 % is overall equals to = 36 + 4 − 36 × 4 % 100 Correct Option: C
As we know the formula for two successive discount.
Successive discounts of D_{1} % and D_{2} % is overall equals to = D_{1} + D_{2} − D_{1} × D_{2} % 100
Where D_{1} = Discount 1 and D_{2} = Discount 2Successive discounts of 36 % and 4 % is overall equals to = 36 + 4 − 36 × 4 % 100
= 38.56%
∴ Percentage difference = 40 – 38.56 = 1.44%
Difference between discount = 1.44% of 100000= 1.44 × 100000 = ₹ 1440 100

A salesman is allowed 5 1 % discount on the total 2
over ₹ 10,000. If his total earnings were ₹ 1,990, his total sales (in ₹ ) wassales made
by him plus a bonus of1 % on sales 2

 30,000
 32,000
 34,000
 35,000

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Let the salesman’s total sales be (10000 + x)
According to the question,10000 × 11 % + x × 6% = 1990 2
⇒ 5000 × 11% + 6x% = 1990
⇒ 5000 × 11 + 6x = 199000
⇒ 6x = 199000 – 55000
⇒ 6x = 144000⇒ x = 144000 = 24000 6
∴ The required sales
= 24000 + 10000 = ₹ 34,000Correct Option: C
Let the salesman’s total sales be (10000 + x)
According to the question,10000 × 11 % + x × 6% = 1990 2
⇒ 5000 × 11% + 6x% = 1990
⇒ 5000 × 11 + 6x = 199000
⇒ 6x = 199000 – 55000
⇒ 6x = 144000⇒ x = 144000 = 24000 6
∴ The required sales
= 24000 + 10000 = ₹ 34,000
 A shopkeeper buys an article for ₹ 360. He wants to make a gain of 25% on it after a discount of 10%. The marked price is

 ₹ 486
 ₹ 450
 ₹ 500
 ₹ 460

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Marked price of the article = ₹ x.
∴ x × 90 = 360 × 125 100 100 ⇒ 9x = 90 × 5 10 ⇒ x = 90 × 5 × 10 = ₹ 500 9
Second method :
C.P. = ₹ 360
r = 25%, D = 10%, M.P. = ?M.P. = 100 + r C.P. 100 − D M.P. = 100 + 25 360 100 − 10 M.P. = 125 × 360 = ₹ 500 90 Correct Option: C
Marked price of the article = ₹ x.
∴ x × 90 = 360 × 125 100 100 ⇒ 9x = 90 × 5 10 ⇒ x = 90 × 5 × 10 = ₹ 500 9
Second method :
C.P. = ₹ 360
r = 25%, D = 10%, M.P. = ?M.P. = 100 + r C.P. 100 − D M.P. = 100 + 25 360 100 − 10 M.P. = 125 × 360 = ₹ 500 90
 A discount of 16% on the marked price of a book enables a man to buy a pen that costs ₹ 80. How much did he pay for the book ?

 ₹ 500
 ₹ 480
 ₹ 420
 ₹ 340

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Given that , discount = 16%
Let the amount paid (S.P.) be P.
According to question ,
∴ 16% of P = 80⇒ P = 80 ×100 16
Correct Option: A
Given that , discount = 16%
Let the amount paid (S.P.) be P.
According to question ,
∴ 16% of P = 80⇒ P = 80 ×100 16
∴ P = ₹ 500
Hence , the amount paid (S.P.) be ₹ 500 .