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How many hours does it take Jennifer to run y miles if she runs at a

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How many hours does it take Jennifer to run y miles if she runs at a [#permalink]

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New post 25 Apr 2017, 04:35
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

92% (00:26) correct 8% (00:42) wrong based on 85 sessions

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Re: How many hours does it take Jennifer to run y miles if she runs at a [#permalink]

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New post 25 Apr 2017, 06:01
Distance = Speed * Time
y = x * Time
Since distance is in miles and speed in x miles/hour & we need to find time in hours
Time = y/x(Option B)
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Re: How many hours does it take Jennifer to run y miles if she runs at a [#permalink]

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New post 25 Apr 2017, 06:22
Bunuel wrote:
How many hours does it take Jennifer to run y miles if she runs at a speed of x miles per hour?

(A) x/y
(B) y/x
(C) xy
(D) 60x/y
(E) y/(60x)


Hi,

We know that

Speed=Dist/time

x=y/time

time=y/x (Units get canceled and we'll remain with hours)

Ans:B
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Re: How many hours does it take Jennifer to run y miles if she runs at a [#permalink]

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New post 28 Apr 2017, 15:09
1
Bunuel wrote:
How many hours does it take Jennifer to run y miles if she runs at a speed of x miles per hour?

(A) x/y
(B) y/x
(C) xy
(D) 60x/y
(E) y/(60x)


We are given that Jennifer’s rate is x and we need to determine how long it will take her to run y miles. Since time is distance/rate, the time it takes her to run y miles is y/x.

Answer: B
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Re: How many hours does it take Jennifer to run y miles if she runs at a   [#permalink] 28 Apr 2017, 15:09
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