Ram Gopal reads $\frac{3}{5}$ th of a book. He finds that there are still $80$ pages left to be read. Total number of pages in the book are

100

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200

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300

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400

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Solution

The correct option is B $200$
$(1 - \frac{3}{5}) \times$ total pages $= 80$
$∴$ number of pages $= 80 \times \frac{5}{2} = 200$

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