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A book is listed at Rs 150, with a discount of 20%. What additional discount must be offered to bring the net price to Rs 108 ?


1. 8%
2. 10%
3. 12%
4. 3.50%

1 Answer

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Best answer
Correct Answer - Option 2 : 10%

Given

A book is listed at Rs 150, with a discount of 20%

Formula used

MP(1 - D/100) = SP

MP = Marked price

D = Discount

SP = Selling price

Calculation

Marked price = 150

⇒ Cost = 150 (1 - 20/100)

⇒ Cost = 150 × 80/100 = 120

⇒ Let additional discount be x%

⇒ 120 - 108 = 12

⇒ x% of 120 = 12

⇒ x = (12 × 100)/120

⇒ x = 10

∴ Additional discount is 10%

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