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Find the Single Discount (As a Percent) Equivalent to Successive Discounts Of: 60% and 60%

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Question

Find the single discount (as a percent) equivalent to successive discounts of:
 60% and 60%

Sum
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Solution

Successive discounts = 60% and 60%

Let M.P. = ₹100

Then S.P. after two discounts,

`=₹(100(100-60)xx(100-60))/(100xx100)`

`=(100xx40xx40)/(100xx100)=₹16`

∴ Total discount = ₹100 − 16 = ₹84

∴ Single discount = 84%

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Chapter 8: Profit, Loss and Discount - Exercise 8 (D) [Page 98]

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Selina Concise Mathematics [English] Class 8 ICSE
Chapter 8 Profit, Loss and Discount
Exercise 8 (D) | Q 16.2 | Page 98

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