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The sum of 18 hours, 20 minutes and 6 hours, 40 minutes is what fracti

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Math Expert
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Joined: 02 Sep 2009
Posts: 47981
The sum of 18 hours, 20 minutes and 6 hours, 40 minutes is what fracti  [#permalink]

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New post 26 Jul 2018, 01:34
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

85% (00:55) correct 15% (01:52) wrong based on 78 sessions

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Director
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Joined: 30 Jan 2015
Posts: 525
Location: India
Concentration: Operations, Marketing
GPA: 3.5
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Re: The sum of 18 hours, 20 minutes and 6 hours, 40 minutes is what fracti  [#permalink]

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New post 26 Jul 2018, 01:47
2
1
Bunuel wrote:
The sum of 18 hours, 20 minutes and 6 hours, 40 minutes is what fraction of a week?


18 hours, 20 minutes + 6 hours, 40 minutes
= 25 hours

1 week = 24 * 7 hours

Required Fraction = 25 / 24*7 = 25 / 168

Hence, B.
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Re: The sum of 18 hours, 20 minutes and 6 hours, 40 minutes is what fracti  [#permalink]

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New post 26 Jul 2018, 03:29
Option B is right answer
1500/24×7×60=25/168

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Re: The sum of 18 hours, 20 minutes and 6 hours, 40 minutes is what fracti  [#permalink]

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New post 27 Jul 2018, 12:53
Summation of 18 hours, 20 minutes 6 hours, 40 minutes is equivalent to :
18 + 6 + 1/3(20/60 hours) + 2/3(40/60 hours) = 24+1 = 25 hours.
Hours in a week = 24*7 = 168
Hence, 25/168, B.
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Re: The sum of 18 hours, 20 minutes and 6 hours, 40 minutes is what fracti  [#permalink]

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New post 30 Jul 2018, 11:49
Bunuel wrote:
The sum of 18 hours, 20 minutes and 6 hours, 40 minutes is what fraction of a week?

A. 1/7
B. 25/168
C. 363/1000
D. 247/500
E. 1


18 hours 20 minutes + 6 hours 40 minutes = 24 hours 60 minutes = 25 hours

Since 1 day = 24 hours, then 25 hours = 25/24 days, which is (25/24)/7 weeks, or 25/168 weeks.

Answer: B
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Re: The sum of 18 hours, 20 minutes and 6 hours, 40 minutes is what fracti &nbs [#permalink] 30 Jul 2018, 11:49
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