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Question

A shopkeeper sells one transistor for Rs.840 at a gain of 20% and another for Rs.960 at a loss of 4%. His total gain or loss percent is

A
151517% loss
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B
51517% gain
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C
623% gain
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D
None of these
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Solution

The correct option is B 51517% gain
C.P. of 1sttransistor=Rs.(100120×840)=Rs.700.
C.P. of 2ndtransistor=Rs.(10096×960)=Rs.1000
So, total C.P.=Rs.(700+1000)=Rs.1700.
Total S.P.=Rs.(840+960)=Rs.1800.
Gain% =(1001700×100)% =51517%

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