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# A girl runs k miles in n hours. How many miles will she run in x hours

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Math Expert
Joined: 02 Sep 2009
Posts: 54369
A girl runs k miles in n hours. How many miles will she run in x hours  [#permalink]

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10 Jan 2016, 08:35
1
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Difficulty:

5% (low)

Question Stats:

91% (00:46) correct 9% (00:50) wrong based on 146 sessions

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A girl runs k miles in n hours. How many miles will she run in x hours at the same rate?

A. knx
B. k⁄n
C. kx⁄n
D. kx
E. kn⁄x

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Manager
Joined: 02 Jun 2015
Posts: 62
Location: United States
Concentration: Strategy, Human Resources
WE: Engineering (Manufacturing)
Re: A girl runs k miles in n hours. How many miles will she run in x hours  [#permalink]

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10 Jan 2016, 08:40
Bunuel wrote:
A girl runs k miles in n hours. How many miles will she run in x hours at the same rate?

A. knx
B. k⁄n
C. kx⁄n
D. kx
E. kn⁄x

Given Speed = k/n

To Find distance in x hours with same speed

Distance = speed * time
Distance = k/n*x = kx/n
SVP
Joined: 26 Mar 2013
Posts: 2133
Re: A girl runs k miles in n hours. How many miles will she run in x hours  [#permalink]

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11 Jan 2016, 04:48
Bunuel wrote:
A girl runs k miles in n hours. How many miles will she run in x hours at the same rate?

A. knx
B. k⁄n
C. kx⁄n
D. kx
E. kn⁄x

We can TEST the Values

k=5 miles, n= 5 hrs, Rate= 1 mile/hr

X= 2 hrs....... Distance= 2 miles.

1) 5*5*2 No need to claculate

2)5/5

3) 5*2/5 =2

4)5 *2

5)5*5/2 No need to calculate

Manager
Joined: 22 Nov 2016
Posts: 205
Location: United States
GPA: 3.4
Re: A girl runs k miles in n hours. How many miles will she run in x hours  [#permalink]

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02 Jul 2017, 14:35
n hours -------k miles
x hours--------? miles

$$\frac{kx}{n}$$

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Kudosity killed the cat but your kudos can save it.
Re: A girl runs k miles in n hours. How many miles will she run in x hours   [#permalink] 02 Jul 2017, 14:35
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