Mark (✓) against the correct answer:

Question:

Mark (✓) against the correct answer:

A dealer lists his goods at 20% above cost price and allows a discount of 10%. His gain per cent is

(a) 10%

(b) 9%
(c) 8%

(d) 12%

Solution:

​(c) 8%  

Let the CP be Rs 100 .

Then, marked price $=$ Rs 120

Discount $=10 \%$ of $\mathrm{MP}$

$=(10 \%$ of Rs. 120$)$

$=$ Rs. $\left(120 \times \frac{10}{100}\right)$

$=$ Rs. 12

Now, SP $=($ MP $)-($ discount $)$

$=$ Rs $(120-12)$

$=$ Rs 108

$\therefore$ Gain percentage $=(108-100) \%$

$=8 \%$

 

 

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