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

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Solution

$S.P. of first fan =Rs.990 G a i n % = 10 % ∴ C.P.= \frac{S . P . \times 100}{100 + g a i n %} = R s . \frac{990 \times 100}{110} = R s .900 S.P. of second fan = Rs.990 L o s s % = 10 % ∴ C . P . = \frac{S . P . \times 100}{100 - l o s s %} = R s . \frac{990 \times 100}{100 - 10} = R s . \frac{990 \times 100}{90} = R s .1100 Total cost price of two fans =Rs.900 + R s .1100 = R s .2000 T o a t a l S . P . = R s .990 + 990 = R s .1980 L o s s = C . P . - S . P . = / R s .2000 - R s .1980 = R s .20 L o s s % = \frac{L o s s \times 100}{C . P} = \frac{20 \times 100}{2000} = 1 % A n s .$

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A shopkeeper sold two fans for Rs, 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.

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