How many pages of the book X did Robert read on Sunday ?
I. The book has 300 pages out of which two-third were read by him before Sunday.
II.Robert read the last 40 pages of the book on the morning of Monday.

If the data in statement I alone are sufficient to answer the question

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If the data in statement II alone are sufficient answer the question

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If the data either in I or II alone are sufficient to answer the question;

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If the data in both the statements together are needed.

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Solution

The correct option is D If the data in both the statements together are needed.
From Statement I, we know that Robert read $\frac{2}{3} \times 300$ = $200$ pages before Sunday. this means he was left with $100$ more pages to read.
From Statement II, we know that he read the last 40 pages on Monday.
From I and II, we can conclude that he must have read $100 - 40$ = $60$ pages on Sunday.
so both Statements are required to answer the question.
option D

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Similar questions

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How many pages of the book X did Robert read on Sunday ?I. The book has 300 pages out of which two-third were read by him before Sunday.II.Robert read the last 40 pages of the book on the morning of Monday.

How many pages of the book X did Robert read on Sunday ?
I. The book has 300 pages out of which two-third were read by him before Sunday.
II.Robert read the last 40 pages of the book on the morning of Monday.