Marked price of a bed is Rs. 2400 .shopkeeper gives successive discounts of 10 % and X % to customer

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7.Profit and Loss

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The marked price of a bed is $Rs. 2400$ .The shopkeeper gives successive discounts of $10 \%$ and $X \%$ to customer. If the customer pays $Rs.\, 1836$ for's the bed then find the value of $X$ in $\%$?

A

$15$

B

$18$

C

$12$

D

$10$

Solution

Here, the successive discounts given are $10 \%$ and $x \%$

$2400 \times \frac{90}{100} \times \frac{(100-x)}{100}=1836$

$(100-x)=\frac{1836 \times 100 \times 100}{2400 \times 90}=85$

So discount $=100-85=15 \%$

Standard 13

Quantitative Aptitude

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