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How many hours were Fran and Fred away from home?

This topic has 2 expert replies and 1 member reply

How many hours were Fran and Fred away from home?

Post Fri Sep 22, 2017 1:01 pm
How many hours were Fran and Fred away from home?

(1) They left at 9.30 am on Monday and returned at 9.30pm on Friday.
(2) Their home was empty for exactly four days.

How will i come up with the correct answer with this statements?

OA E

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Post Tue Jan 16, 2018 5:05 pm
lheiannie07 wrote:
How many hours were Fran and Fred away from home?

(1) They left at 9.30 am on Monday and returned at 9.30pm on Friday.
(2) Their home was empty for exactly four days.
We need to determine the number of hours Fran and Fred were away from home.

Statement One Alone:

They left at 9:30 am on Monday and returned at 9:30 pm on Friday.

Statement one is not sufficient to answer the question. The number of hours would be different depending on whether they return on Friday of the same week or Friday of a different week.

Statement Two Alone:

Their home was empty for exactly four days.

Statement two is not sufficient to answer the question. The number of hours could be different depending on who else live in their house. If they are the only ones who live in the house, then they were away from home for 4 x 24 = 96 hours. However, if someone else also lives in the house, say their children, it is possible that their children return home after 4 days but Fran and Fred were still away from home.

Statements One and Two Together:

Even with the two statements, it is still impossible to tell how many hours Fran and Fred were away from home.

Answer: E

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Post Wed Jan 10, 2018 12:17 am
Jay@ManhattanReview wrote:
lheiannie07 wrote:
How many hours were Fran and Fred away from home?

(1) They left at 9.30 am on Monday and returned at 9.30pm on Friday.
(2) Their home was empty for exactly four days.

How will i come up with the correct answer with this statements?

OA E
Statement 1: They left at 9.30 am on Monday and returned at 9.30 pm on Friday.

Case 1: If they left and came back in the same week, the number of hours Fran and Fred were away from home = 4.5 days = 4.5*24 hrs.

Case 2: If they did not leave and come back in the same week, the number of hours Fran and Fred were away from home > 4.5 days > 4.5*24 hrs.

No unique answer. Insufficient.

Statement 2: Their home was empty for exactly four days.

This shows that they were away from home for 4*24 hours.

Though this statement seems sufficient, one of the many possible answers does not match the answer from Statement 2. The minimum possible answer form Statement 1 is 4.5*24 hours ≠ 4*24 hours (Only answer from Statement 2).

In DS, the question and both the statements represent a holistic situation. It is not possible that the statements contradict each other. Since the question suggests discrepancy, we must look Statement 2 again.

It is possible that Fran and Fred are not the only members of the family. If other member (s) keep coming and going out, making the home empty for 4 days, it is not sure for how many hours Fran and Fred were out. Insufficient.

Statement 1 & 2:

Even after combing the statement, we cannot ascertain for how many hours they are out. Insufficient.

The correct answer: E

Hope this helps!

Download free ebook: Manhattan Review GMAT Quantitative Question Bank Guide

-Jay
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Manhattan Review GMAT Prep

Locations: New York | Hyderabad | Mexico City | Toronto | and many more...

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Thanks a lot!

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Post Mon Sep 25, 2017 1:27 am
lheiannie07 wrote:
How many hours were Fran and Fred away from home?

(1) They left at 9.30 am on Monday and returned at 9.30pm on Friday.
(2) Their home was empty for exactly four days.

How will i come up with the correct answer with this statements?

OA E
Statement 1: They left at 9.30 am on Monday and returned at 9.30 pm on Friday.

Case 1: If they left and came back in the same week, the number of hours Fran and Fred were away from home = 4.5 days = 4.5*24 hrs.

Case 2: If they did not leave and come back in the same week, the number of hours Fran and Fred were away from home > 4.5 days > 4.5*24 hrs.

No unique answer. Insufficient.

Statement 2: Their home was empty for exactly four days.

This shows that they were away from home for 4*24 hours.

Though this statement seems sufficient, one of the many possible answers does not match the answer from Statement 2. The minimum possible answer form Statement 1 is 4.5*24 hours ≠ 4*24 hours (Only answer from Statement 2).

In DS, the question and both the statements represent a holistic situation. It is not possible that the statements contradict each other. Since the question suggests discrepancy, we must look Statement 2 again.

It is possible that Fran and Fred are not the only members of the family. If other member (s) keep coming and going out, making the home empty for 4 days, it is not sure for how many hours Fran and Fred were out. Insufficient.

Statement 1 & 2:

Even after combing the statement, we cannot ascertain for how many hours they are out. Insufficient.

The correct answer: E

Hope this helps!

Download free ebook: Manhattan Review GMAT Quantitative Question Bank Guide

-Jay
_________________
Manhattan Review GMAT Prep

Locations: New York | Hyderabad | Mexico City | Toronto | and many more...

Schedule your free consultation with an experienced GMAT Prep Advisor! Click here.

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