Question

Raju reads ${\frac{2}{3}}^{rd}$ of a book. He finds that still there are $100$ pages to be read. The total number of pages in the book are?

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Answer 1

If Raju reads ${\frac{2}{3}}^{rd}$ of a book. He will still have ${\frac{1}{3}}^{rd}$ of the book to complete.
So, ${\frac{1}{3}}^{rd}$ of the total number of pages is given as $100$. Hence, the total number of pages are $(3\times 100)=300$