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A shopkeeper professes to sell his goods at cost price but uses 800 gram weight instead of 1 kg. Thus, find his gain percentage.

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10%

15%

20%

25%

answer is D.

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Detailed Solution

It is known that,
1 kg = 1000 gram
Given,
Cost price of 1000 gram = Selling price of 800 gram
So, total gain in the weight of good,
= (1000 g-800 g)
=200 g
So, percentage of gain

p % = \frac{200}{800} \times 100

p % = 25 %

So, the shopkeeper makes the gain of 25%.
Correct option is 4.

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