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Driving at 48 miles per hour, how many minutes will take to drive 32

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Driving at 48 miles per hour, how many minutes will take to drive 32  [#permalink]

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New post 15 Jul 2018, 08:50
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A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

86% (01:02) correct 14% (00:59) wrong based on 42 sessions

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Re: Driving at 48 miles per hour, how many minutes will take to drive 32  [#permalink]

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New post 15 Jul 2018, 09:03
Top Contributor
Bunuel wrote:
Driving at 48 miles per hour, how many minutes will take to drive 32 miles?

A. 2/3
B. 3/2
C. 40
D. 45
E. 2400


Ans. C.40

Distance = Speed x Time (1 hour/60 minutes)
So, [60/48]*32
= 40
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Re: Driving at 48 miles per hour, how many minutes will take to drive 32  [#permalink]

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New post 15 Jul 2018, 10:18
Bunuel wrote:
Driving at 48 miles per hour, how many minutes will take to drive 32 miles?

A. 2/3
B. 3/2
C. 40
D. 45
E. 2400



For 48 miles we need 60 minutes

For 1 mile we need 60 /48 minutes

For 32 miles we need (60/48)*32 minutes


= 40 minutes

The best answer is C.
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Driving at 48 miles per hour, how many minutes will take to drive 32  [#permalink]

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New post 15 Jul 2018, 11:16
Bunuel wrote:
Driving at 48 miles per hour, how many minutes will take to drive 32 miles?

A. 2/3
B. 3/2
C. 40
D. 45
E. 2400

\(\frac{32}{48}*60\)

= 40 , Answer must be (C)
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Driving at 48 miles per hour, how many minutes will take to drive 32  [#permalink]

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New post 15 Jul 2018, 11:42
Bunuel wrote:
Driving at 48 miles per hour, how many minutes will take to drive 32 miles?

A. 2/3
B. 3/2
C. 40
D. 45
E. 2400

I. Distance/rate= time

Rate: \(\frac{48mi}{1hr}=\frac{48mi}{60 mins}=\frac{4mi}{5mins}\)

TIME needed to drive 32 miles (\(\frac{D}{r} = t\)):
\(\frac{32}{(\frac{4}{5})}=(32*\frac{5}{4})=40\) minutes

Answer C

II. Proportion

Rate in minutes:
\(\frac{48mi}{1hr}*\frac{1hr}{60mins}=\frac{48mi}{60mins}=\frac{4mi}{5mins}\)

TIME needed to drive 32 miles?
\(\frac{4mi}{5mins}=\frac{32mi}{T minutes}\)
\(4T=(5*32)\)

\(T=40\) minutes

Answer C
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Re: Driving at 48 miles per hour, how many minutes will take to drive 32  [#permalink]

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New post 15 Jul 2018, 13:32
48 miles -- 1 hour
32 miles -- x hour

x=\(\frac{32}{48}\)=\(\frac{2}{3}\) Hour
\(\frac{2}{3}\) Hour --> \(\frac{2}{3}\)*60=40 minutes

IMO
Ans: C
Re: Driving at 48 miles per hour, how many minutes will take to drive 32 &nbs [#permalink] 15 Jul 2018, 13:32
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