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# A thief escapes from prison at 2 pm and travels away at a speed of 30

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General GMAT Forum Moderator
Joined: 15 Jan 2018
Posts: 604
Concentration: General Management, Finance
GMAT 1: 720 Q50 V37
A thief escapes from prison at 2 pm and travels away at a speed of 30  [#permalink]

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14 Apr 2019, 01:41
1
00:00

Difficulty:

45% (medium)

Question Stats:

60% (01:32) correct 40% (01:22) wrong based on 35 sessions

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A thief escapes from prison at 2 pm and travels away at a speed of 30 miles per hour. The police realize the escape at 3:30 pm and start the chase then at a speed of 40 miles per hour. At what time will the police catch the thief?

A. 5 pm
B. 6 pm
C. 6:30 pm
D. 8 pm
E: 10 pm

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Director
Joined: 19 Oct 2018
Posts: 980
Location: India
Re: A thief escapes from prison at 2 pm and travels away at a speed of 30  [#permalink]

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14 Apr 2019, 01:59
relative distance between thief and police at 3:30= 30*1.5=45miles
Their relative speed=40-30=10 miles/hr
time taken=Rel. Distance/Rel. Speed=4.5hrs
Re: A thief escapes from prison at 2 pm and travels away at a speed of 30   [#permalink] 14 Apr 2019, 01:59
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