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At 11 AM, Abraham leaves from his home for a meeting that

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At 11 AM, Abraham leaves from his home for a meeting that

by VJesus12 » Sat Aug 25, 2018 2:06 am

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C

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At 11 AM, Abraham leaves from his home for a meeting that is scheduled for 1 PM. If the venue of the meeting is not less than 100 kilometers away and Abraham drives at a speed not less than 60 kilometers per hour, will he be late for the meeting?

(1) The venue of the meeting is less than 120 kilometers away
(2) He does not drive at a speed greater than 80 kilometers per hour

The OA is the option A.

How can I state an answer here without knowing the exact distance and the exact speed? Is there a way to do it? Please, someone, help me.

Source: e-GMAT
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Source: — Data Sufficiency |
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by swerve » Sat Aug 25, 2018 9:42 am

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Your Answer

A

B

C

D

E

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Rephrase the question: Is d/s<= 2

(1) The venue of the meeting is less than 120 kilometers away

Test the threshold

Let d=100 & S=60..........100/60= 1 2/3 hr < 2

Let d=120 & S=60..........120/60=2 hrs

This means that if we increase the distance to be not less than 60, then the time required will be always less than 2 hrs. So he will catch up his meeting,

Sufficient

(2) He does not drive at a speed greater than 80 kilometers per hour

Let d=160 & S=80.........160/80=2 hrs .........arrive on time

Let d= 320 & S=80.........320/80=4 hrs ........arrive late

Insufficient.

Therefore, A is the correct answer.
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