Question

A vender bought 9 sweets for ₹1. At what should he sell it to gain 80%?


$s.p. = (100 + gain) \ 100 \ c.p.$
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Answer 1

Answer:

A vendor bought 9 sweet for rupees 1. What rate should he sell it to gain 80%?

80% gain on rs 1 is 80 paise.

So total selling price must be 1.80 rs for 9 sweets.

So he need to sell 1 piece with price of 1.80/9

That is in order to get 80% profit he can sell one piece of sweet of RS 1.80/9 = 0.20 or 20 paise

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Answer 2

Answer:

$\huge\mathcal\green{9 \times \frac{80}{100} = 7 \times \frac{1}{5} } \\ \huge\mathcal\green{7 \times \frac{1}{5} + 9 } \\ \huge\mathcal\green{ \frac{36}{5} + 9 } \\ \huge\mathcal\green{ \frac{36}{5} + \frac{45}{5} } \\ \huge\mathcal\green{ \frac{36}{5} + \frac{45}{5} } \\ \huge\mathcal\green{ \frac{81}{5} } \\ \huge\mathcal\green{ 16 \times \frac{1}{5} }$

Step-by-step explanation:

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