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- Quantitative Aptitude
7.Profit and Loss
medium
A sells a bicycle to $B$ at a profit of $20 \%$ and $B$ sells it to $C$ at a profit of $25 \% .$ If $C$ pays $R s .\,1500,$ what did $A$ pay for it in $RS.$?
A
$825$
B
$1000$
C
$1100$
D
$1125$
Solution
Let $CP$ for $A$ be Rs. 100
A sells it to $B$ at $20 \%$ profit
Rs. $[100+20 \%$ of 100$]=$ $Rs. 120$
Now $B$ sells it to $C$ at $25 \%$ profit
Rs. $[120+25 \%$ of $120]=$ $Rs. 150$
If $C$ buys at $Rs.$ $150$ A bought at $Rs .100$
Hence, by unitary method,
If $C$ bought at $\operatorname{Rs} .1500,$ A paid $=$ Rs. $\left[\frac{100}{150} \times 1500\right]=$ $Rs. 1000$
Standard 13
Quantitative Aptitude