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If Machine X can make 40 widgets in 8 minutes, how many widgets can it

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If Machine X can make 40 widgets in 8 minutes, how many widgets can it [#permalink]

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New post 20 Oct 2017, 00:17
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A
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Re: If Machine X can make 40 widgets in 8 minutes, how many widgets can it [#permalink]

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New post 20 Oct 2017, 00:30
Bunuel wrote:
If Machine X can make 40 widgets in 8 minutes, how many widgets can it make in 1 hour?

(A) 90

(B) 180

(C) 240

(D) 300

(E) 320


If the machine makes 40 widgets in 8 minutes, it would make 5 widgets in a minute!

In an hour(60 minutes long),
the machine would make 60*5 = 300 widgets(Option D)
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Re: If Machine X can make 40 widgets in 8 minutes, how many widgets can it [#permalink]

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New post 20 Oct 2017, 04:44
X can make =40/8 = 5 widgets per min.
No. of widgets by X in 60 min (1 hr) = 5*60 = 300
Answer D.
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Re: If Machine X can make 40 widgets in 8 minutes, how many widgets can it [#permalink]

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New post 20 Oct 2017, 06:59
Bunuel wrote:
If Machine X can make 40 widgets in 8 minutes, how many widgets can it make in 1 hour?

(A) 90

(B) 180

(C) 240

(D) 300

(E) 320


Number of widgets that can be made by Machine X in 1 hour = 40/8 = 5
Number of widgets it can make in 1 hour = 5*60 = 300

Answer D
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Re: If Machine X can make 40 widgets in 8 minutes, how many widgets can it [#permalink]

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New post 24 Oct 2017, 06:15
Bunuel wrote:
If Machine X can make 40 widgets in 8 minutes, how many widgets can it make in 1 hour?

(A) 90

(B) 180

(C) 240

(D) 300

(E) 320


Since 1 hour is 60 minutes, Machine X can make 40/8 x 60 = 5 x 60 = 300 widgets.

Alternate solution:

We can set up a proportion in which x is the number of widgets that can be made in 1 hour, or 60 minutes:

40/8 = x/60

5 = x/60

300 = x.

Answer: D
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Re: If Machine X can make 40 widgets in 8 minutes, how many widgets can it   [#permalink] 24 Oct 2017, 06:15
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