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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

Find a Single Discount (As a Percent) Equivalent to Following Successive Discounts: 20% and 12% - Mathematics

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प्रश्न

Find a single discount (as a percent) equivalent to following successive discounts:
20% and 12%

योग
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उत्तर

Successive discount = 20% and 12%

Let M.P. = ₹100

First discount = 20%

Second discount = 12%

∴ S.P.`=("M.P."(100-"Discount%"))/100`

`=(100xx(100-20)(100-12))/(100xx100)`

`=(100xx80xx88)/(100xx100)=352/5`

∴ Total discount on ₹100 = `100-352/5`

`=(500-352)/5=₹148/5`

∴ Single discount`=148/5%`

`=29 3/5%`

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अध्याय 8: Profit, Loss and Discount - Exercise 8 (D) [पृष्ठ ९८]

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सेलिना Concise Mathematics [English] Class 8 ICSE
अध्याय 8 Profit, Loss and Discount
Exercise 8 (D) | Q 15.1 | पृष्ठ ९८
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