The list price of a parker pen is Rs 160 and a customer buys it for Rs 122.40 after two successive discounts. If first is 10% then the second is

18%

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17%

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16%

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15%

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Solution

The correct option is D 15%
Total discount $= R s 160 - R s 122.40 = R s 37.60$
1st discount $= 10 % o f R s 160 = R s 16$ .
2nd discount $= R s 37.60 - R s 16 = R s 21.60$
Balance after firsr discount $= R s 160 - R s 16 = R s 144$ .
If 2nd discount is $x %$ , then $x % o f R s 144 = R s 21.60$ , so $x = 15$ .

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The list price of a parker pen is Rs 160 and a customer buys it for Rs 122.40 after two successive discounts. If first is 10% then the second is

The correct option is D 15%Total discount =Rs160−Rs122.40=Rs37.601st discount =10%ofRs160=Rs16.2nd discount =Rs37.60−Rs16=Rs21.60Balance after firsr discount =Rs160−Rs16=Rs144.If 2nd discount is x%, then x%ofRs144=Rs21.60, so x=15.