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John is traveling to a meeting that is 28 miles away. He nee

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timmaxwell8
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John is traveling to a meeting that is 28 miles away. He nee [#permalink] New post   08 Oct 2009, 15:22
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John is traveling to a meeting that is 28 miles away. He needs to be there in 30 minutes. How fast does he need to go to make it to the meeting on time?

A. 25 mph
B. 37 mph
C. 41 mph
D. 49 mph
E. 56 mph
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Bunuel
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Re: MPH question [#permalink] New post   08 Oct 2009, 15:39
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timmaxwell8 wrote:
John is traveling to a meeting that is 28 miles away. He needs to be there in 30 minutes. How fast does he need to go to make it to the meeting on time?

A. 25 mph
B. 37 mph
C. 41 mph
D. 49 mph
E. 56 mph


Well 56mph. E. Time*rate=distance --> 0.5*rate=28 --> rate=56
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mimajit
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Re: John is traveling to a meeting that is 28 miles away. He nee [#permalink] New post   08 Dec 2019, 21:09
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timmaxwell8 wrote:
John is traveling to a meeting that is 28 miles away. He needs to be there in 30 minutes. How fast does he need to go to make it to the meeting on time?

A. 25 mph
B. 37 mph
C. 41 mph
D. 49 mph
E. 56 mph


D= 28 miles Time = 30Minutes Rate = ?

Rate = distance / Time = 28/30 ( Note the ans choice are in Miles perhour and we are getting Miles / Minutes

So 28/30*60 =56 mph ( E)
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rajatchopra1994
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Re: John is traveling to a meeting that is 28 miles away. He nee [#permalink] New post   08 Dec 2019, 21:48
timmaxwell8 wrote:
John is traveling to a meeting that is 28 miles away. He needs to be there in 30 minutes. How fast does he need to go to make it to the meeting on time?

A. 25 mph
B. 37 mph
C. 41 mph
D. 49 mph
E. 56 mph


Explanation:
Distance= Speed * Time
We know: D=28
Time=0.5 (in Hours)
Speed=?

28=0.5*S
S=56mph
IMO-E
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Re: John is traveling to a meeting that is 28 miles away. He nee [#permalink] New post   16 Oct 2022, 07:30
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Re: John is traveling to a meeting that is 28 miles away. He nee [#permalink]
16 Oct 2022, 07:30
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