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# If a heavy-load trailer traveled 7 miles in 1 hour and 10 minutes, wha

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SVP
Status: Preparing GMAT
Joined: 02 Nov 2016
Posts: 1729
Location: Pakistan
GPA: 3.39
If a heavy-load trailer traveled 7 miles in 1 hour and 10 minutes, wha  [#permalink]

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21 Feb 2017, 05:19
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Difficulty:

15% (low)

Question Stats:

95% (00:50) correct 5% (00:30) wrong based on 26 sessions

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If a heavy-load trailer traveled 7 miles in 1 hour and 10 minutes, what was its speed in miles per hour?

(A) 6
(B) 6.5
(C) 8
(D) 8.5
(E) 10

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Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 8397
Location: Pune, India
Re: If a heavy-load trailer traveled 7 miles in 1 hour and 10 minutes, wha  [#permalink]

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21 Feb 2017, 05:51
1
If a heavy-load trailer traveled 7 miles in 1 hour and 10 minutes, what was its speed in miles per hour?

(A) 6
(B) 6.5
(C) 8
(D) 8.5
(E) 10

10 mins is simply 10/60 = 1/6 hrs

1 hr 10 mins is then equal to 1 + 1/6 = 7/6 hrs

Speed in miles/hr = 7 miles/(7/6 hrs) = 6 miles/hr

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Target Test Prep Representative
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Joined: 04 Mar 2011
Posts: 2830
Re: If a heavy-load trailer traveled 7 miles in 1 hour and 10 minutes, wha  [#permalink]

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23 Feb 2017, 10:41
If a heavy-load trailer traveled 7 miles in 1 hour and 10 minutes, what was its speed in miles per hour?

(A) 6
(B) 6.5
(C) 8
(D) 8.5
(E) 10

We are given that the time is 1 hour and 10 minutes. Let’s convert it to hours only:

1 hour and 10 minutes = 1 hour and 1/6 hours = 7/6 hours

Since rate = distance/time, the rate in miles per hour is:

7/(7/6) = 42/7 = 6 mph

Alternate Solution:

We know that the trailer travels 7 miles in 70 minutes, which is 1 mile per 10 minutes. Thus, it will travel 6 miles in 60 minutes, or 6 mph.

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Re: If a heavy-load trailer traveled 7 miles in 1 hour and 10 minutes, wha &nbs [#permalink] 23 Feb 2017, 10:41
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