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# A certain mule travels at 2/3 the speed of a certain horse. If it take

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Math Expert
Joined: 02 Sep 2009
Posts: 56304
A certain mule travels at 2/3 the speed of a certain horse. If it take  [#permalink]

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07 Jan 2019, 04:57
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Difficulty:

25% (medium)

Question Stats:

76% (01:44) correct 24% (01:42) wrong based on 42 sessions

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A certain mule travels at 2/3 the speed of a certain horse. If it takes the horse 6 hours to travel 20 miles, how many hours will the trip take the mule?

A. 4
B. 8
C. 9
D. 10
E. 30

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Location: India
Concentration: Sustainability, Marketing
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Re: A certain mule travels at 2/3 the speed of a certain horse. If it take  [#permalink]

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07 Jan 2019, 05:11
Bunuel wrote:
A certain mule travels at 2/3 the speed of a certain horse. If it takes the horse 6 hours to travel 20 miles, how many hours will the trip take the mule?

A. 4
B. 8
C. 9
D. 10
E. 30

speed of horse = 20/6
speed of mule = 20/6 * 2/3 = 20/9

time to cover 20 miles by mule = 20*9/20 = 9 hrs IMO C
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Joined: 26 Dec 2018
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Location: India
Re: A certain mule travels at 2/3 the speed of a certain horse. If it take  [#permalink]

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07 Jan 2019, 07:11
Speed of Horse = 20/6 miles /hr
Speed of Mule = 2/3 Speed of Horse = (2/3) x (20/6) = 20/9 miles /hr

Time = Distance /Speed
Time required for Mule to complete the travel = (20miles) / (20/9) miles/hr = 9 hours

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Re: A certain mule travels at 2/3 the speed of a certain horse. If it take   [#permalink] 07 Jan 2019, 07:11
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