Question

sachin sold two machines for rs 990 each gaining 10% on one losing 10% on the other.find his gain or loss per cent in the transaction​

Answer 1

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Mr. Sinha sold two tape-recorders for Rs. 990 each; gaining 10% on one and losing 10% on the other. Find his total loss or gain, as percent, on the whole transaction.

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Solution

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In the first transaction,

Profit % =

C.P

S.P.−C.P.

×100

=>

C.P.

990.−C.P.

×100=10

=>990−C.P.=0.1C.P.

=>1.1C.P.=Rs990

−>C.P.=Rs900

Now, at loss 10 % ,

Loss % =

C.P

C.P.−S.P.

×100=10

=>

990

C.P.−990

×100=10

=>C.P.−990=99

=>C.P.=990+90=Rs1080

SO, total C.P. =Rs900+Rs1080=Rs1980

total S.P. =Rs990+Rs990=Rs1980

Since, C.P.=S.P, there is no gain or loss

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Answer 2

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