How many pages of book X did Robert read on Sunday ?
Statements:
1. The book has 300 pages out of which two-thirds were read by him before Sunday.
2. Robert read the last 40 pages of the book on the morning of Monday.

Options

A. I alone is sufficient while II alone is not sufficient
B. II alone is sufficient while I alone is not sufficient
C. Either I or II is sufficient
D. Both I and II are sufficient

Answer

D

Explanation

From I and II, we find that Robert read (300 `xx` 2/3) i.e. 200 pages before Sunday and the last 40 pages on Monday.
This means that he read [300 - (200+40)] i.e. 60 pages on Sunday.