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Renee rides her bicycle 20 miles in m minutes. If she can ride x miles

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Renee rides her bicycle 20 miles in m minutes. If she can ride x miles  [#permalink]

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New post 08 Mar 2017, 09:17
2
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A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

83% (01:03) correct 17% (00:53) wrong based on 67 sessions

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Renee rides her bicycle 20 miles in m minutes. If she can ride x miles in 10 minutes, which of the following equals x?

A. m/200
B. m/20
C. m/2
D. 2m
E. 200/m

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Renee rides her bicycle 20 miles in m minutes. If she can ride x miles  [#permalink]

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New post 08 Mar 2017, 14:44
2
SajjadAhmad wrote:
Renee rides her bicycle 20 miles in m minutes. If she can ride x miles in 10 minutes, which of the following equals x?

A. m/200
B. m/20
C. m/2
D. 2m
E. 200/m

Dear SajjadAhmad,

I'm happy to respond. :-) This is a very basic proportion problem. See:
GMAT Quant: Rates and Ratios

\(\frac{distance}{time} = \frac{20 miles}{(m) min} = \frac{(x) miles}{10 min}\)

Units are the same on both sides, so cancel the units.

\(\frac{20}{m} = \frac{x}{10}\)

We want to solve for x, so multiply both sides by 10.

\(\frac{200}{m} = x\)

OA = (E)

Does all this make sense?
Mike :-)
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Re: Renee rides her bicycle 20 miles in m minutes. If she can ride x miles  [#permalink]

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New post 09 Mar 2017, 04:26
speed = 20/m
distance covered in 10 minutes = x = (20/m) x 10 = 200/m

Option E
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Re: Renee rides her bicycle 20 miles in m minutes. If she can ride x miles  [#permalink]

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New post 15 Mar 2017, 15:16
SajjadAhmad wrote:
Renee rides her bicycle 20 miles in m minutes. If she can ride x miles in 10 minutes, which of the following equals x?

A. m/200
B. m/20
C. m/2
D. 2m
E. 200/m


We are given that Renee’s rate is 20/m and that it’s also x/10. We can set up the proportion:

20/m = x/10

200 = mx

200/m = x

Answer: E
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Re: Renee rides her bicycle 20 miles in m minutes. If she can ride x miles  [#permalink]

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New post 28 Mar 2017, 05:35
ScottTargetTestPrep wrote:
SajjadAhmad wrote:
Renee rides her bicycle 20 miles in m minutes. If she can ride x miles in 10 minutes, which of the following equals x?

A. m/200
B. m/20
C. m/2
D. 2m
E. 200/m


We are given that Renee’s rate is 20/m and that it’s also x/10. We can set up the proportion:

20/m = x/10

200 = mx

200/m = x

Answer: E


Hey Scott

How do we know that we have to equate the two?

I followed unitary method and then equated after finding miles per min.

It would be great if you could explain this.
Thanks.
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Re: Renee rides her bicycle 20 miles in m minutes. If she can ride x miles  [#permalink]

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New post 31 Mar 2017, 05:19
Shiv2016 wrote:
ScottTargetTestPrep wrote:
SajjadAhmad wrote:
Renee rides her bicycle 20 miles in m minutes. If she can ride x miles in 10 minutes, which of the following equals x?

A. m/200
B. m/20
C. m/2
D. 2m
E. 200/m


We are given that Renee’s rate is 20/m and that it’s also x/10. We can set up the proportion:

20/m = x/10

200 = mx

200/m = x

Answer: E


Hey Scott

How do we know that we have to equate the two?

I followed unitary method and then equated after finding miles per min.

It would be great if you could explain this.
Thanks.



Hey Shiv2016,

Great question.

We understand from the context that Renee is riding her bike at a constant rate. Since we are given that Renee rides her bike 20 miles in m minutes AND she can ride x miles in 10 minutes, we are essentially being told that the two rates are the same, and that is why we set them equal to each other.
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Re: Renee rides her bicycle 20 miles in m minutes. If she can ride x miles &nbs [#permalink] 31 Mar 2017, 05:19
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Renee rides her bicycle 20 miles in m minutes. If she can ride x miles

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