Megha bought 10 note-books for Rs. 40 and sold them at Rs. 4.75 per note-book. Find, her gain percentage

18 \frac{3}{4} %

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16 \frac{1}{5} %

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12 \frac{6}{11} %

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19 \frac{3}{7} %

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Solution

The correct option is A $18 \frac{3}{4} %$
Cost of one notebook $= \frac{40}{10} = R s 4$
Gain on one notebook $= R s 4.75 - R s 4 = R s 0.75$
Gain % $= \frac{G a i n}{O r i g i n a l C o s t} \times 100 = \frac{0.75}{4} \times 100 = 18 \frac{3}{4}$ %

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