Question

A retailer bought 20 dozen pencils at ₹10 a dozen. He sold all the pencils at one rupee a piece. Find his gain or loss percentage.
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Answer 1

Answer:

the answer is 20% profit

Step-by-step explanation:

retailer bought 20 dozen pencils at ₹10 per dozen which means

20 dozen pencils costs him = ₹10 × 20

= ₹200

Cost price of the retailer is ₹200

Now each dozen contains 12 pencils

therefore 20 dozens means = 20×12 = 240 pencils

Now he sells each pencil at ₹1

therefore, the selling price is = 240 ×₹1 = ₹240

Now the profit = selling price - cost price

= ₹240 - ₹200

= ₹40

Profit % =

$\frac{ Profit}{cost \: price} \times 100$

$= \frac{40}{200} \times 100 \\ = \frac{40}{2} \\ = 20$

therefore the profit% is 20%