Question

31. A shopkeeper sold two fans for ₹ 990 each. On one he gains 10% and on the other he loses
10%. Calculate his gain or loss per cent in the whole transaction.​

Answer 1

Step-by-step explanation:

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

Answer:

In whole transaction his loss % is 1% .