Left pan of a faculty balance weighs 100 grams more than its right pan. A shopkeeper keeps the weight measure in the left pan while buying goods but keeps it in the right pan while selling his goods. He uses only 1 kg weight measure. If he sells his goods at the listed cost price, what is his gain ?
A. $$\frac{{100}}{{11}}$$%
B. $$\frac{{200}}{{11}}$$%
C. $$\frac{{100}}{{9}}$$%
D. $$\frac{{200}}{{9}}$$%
Answer: Option D
Solution(By Examveda Team)
Let the C.P. of 1 kg goods be Rs. 1Then,
He buys 1100 g goods for Rs. 1 and sells 900 g goods for Rs. 1
∴ C.P. of 1100 g goods = Rs. 1
⇒ C.P. of 900 g goods
$$\eqalign{ & = {\text{Rs}}.\left( {\frac{1}{{1100}} \times 900} \right) \cr & = {\text{Rs}}.\frac{9}{{11}} \cr} $$
S.P. of 900 g goods = Rs. 1
$$\eqalign{ & {\text{Gain = Rs}}.\left( {1 - \frac{9}{{11}}} \right) \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\, = {\text{Rs}}{\text{.}}\frac{2}{{11}} \cr & \therefore {\text{Gain }}\% \cr & = \left( {\frac{2}{{11}} \times \frac{{11}}{9} \times 100} \right)\% \cr & = \frac{{200}}{9}\% \cr} $$
Related Questions on Profit and Loss
A. 45 : 56
B. 45 : 51
C. 47 : 56
D. 47 : 51
A. Rs. 2600
B. Rs. 2700
C. Rs. 2800
D. Rs. 3000
A. A neither losses nor gains
B. A makes a profit of 11%
C. A makes a profit of 20%
D. B loses 20%
A. Rs. 3,750
B. Rs. 3,250
C. Rs. 2,750
D. Rs. 2,250
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