Verbal Reasoning - Data Sufficiency - Discussion

In each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and

Give answer

  • (A) If the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question
  • (B) If the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question
  • (C) If the data either in statement I alone or in statement II alone are sufficient to answer the question
  • (D) If the data given in both statements I and II together are not sufficient to answer the question and
  • (E) If the data in both statements I and II together are necessary to answer the question.

19. 

Question: 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.

[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]. Neither I nor II is sufficient
[E]. Both I and II are sufficient

Answer: Option E

Explanation:

From I and II, we find that Robert read (300 x 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.


Tmtmtm said: (Oct 10, 2013)  
It's possible that nothing was read on Sunday, and he skipped to he end on Monday.

Arunkumar Venkatesh said: (May 8, 2015)  
Agreed with @Tmtmtm.

I also have doubt.

He may have read only 20 pages till page number 220 on Sunday.

And continued with page number 260 Monday morning.

Any clarifications on this?

Kumud Singh said: (Mar 20, 2018)  
The question itself telling thar Robert did read on Sunday.

It is asking how many pages he read on Sunday. (Page no. is immaterial)

Before Sunday, he read -- 300*2/3=200 pages
Left with -- 300-200 =100 pages
And, on Monday, he read --40 pages (last pages)
So, on Sunday, he read --100-40=60 pages.

Manish said: (Aug 14, 2019)  
He also read between 12 am to 4 am on Sunday so how it is correct he read 60 pages on Sunday?

Abhi said: (Oct 5, 2021)  
It's possible that nothing was read on Sunday, and he skipped to he end on Monday. Agreed.

So, it could be neither follows.

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