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If it takes 5 machines 5 minutes to make 5 widgets, how long would it

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Bunuel
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If it takes 5 machines 5 minutes to make 5 widgets, how long would it [#permalink] New post   01 Nov 2018, 04:58
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If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

A. 1 minute
B. 5 minutes
C. 10 minutes
D. 15 minutes
E. 100 minutes
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B
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Re: If it takes 5 machines 5 minutes to make 5 widgets, how long would it [#permalink] New post   01 Nov 2018, 05:22
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Bunuel wrote:
If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

A. 1 minute
B. 5 minutes
C. 10 minutes
D. 15 minutes
E. 100 minutes


if 5 machines finish 5 widgets in 5 minutes it means per machine does 1 widget in 5 minutes.

Rate of 1 machine = 1 widget/5 minutes.

so if 100 machines work together the machines can finish 100 widgets in 5 minutes.

Answer choice B
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Re: If it takes 5 machines 5 minutes to make 5 widgets, how long would it [#permalink] New post   06 Nov 2018, 08:00
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Bunuel wrote:
If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

A. 1 minute
B. 5 minutes
C. 10 minutes
D. 15 minutes
E. 100 minutes



Useful property :

no. of machine * time * rate = work

5 * 5 * R = 5

R = 1/5.

Now we can use this rate to find out the required time:

no. of machine * time * rate = work

100 * T * 1/5 = 100

T = 5.

Thus the best answer is B.
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Re: If it takes 5 machines 5 minutes to make 5 widgets, how long would it [#permalink] New post   07 Nov 2018, 19:11
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Bunuel wrote:
If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

A. 1 minute
B. 5 minutes
C. 10 minutes
D. 15 minutes
E. 100 minutes


The rate of 5 machines is 1 widget per minute, so the rate of 100 machines is 1 x 20 = 20 widgets per minute, so it will take 100 machines 100/20 = 5 minutes to make 100 widgets.

Answer: B
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Re: If it takes 5 machines 5 minutes to make 5 widgets, how long would it [#permalink] New post   29 Sep 2020, 08:22
In a lake, there is a patch of lily pads. every day the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?
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Re: If it takes 5 machines 5 minutes to make 5 widgets, how long would it [#permalink] New post   29 Sep 2020, 09:02
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0349117266 wrote:
In a lake, there is a patch of lily pads. every day the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?


This question is discussed here: https://gmatclub.com/forum/in-a-lake-th ... 20938.html Hope it helps.

Please read carefully and follow our posting rules: https://gmatclub.com/forum/rules-for-po ... 33935.html Thank you.
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Re: If it takes 5 machines 5 minutes to make 5 widgets, how long would it [#permalink] New post   20 Aug 2021, 05:56
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We know M1T1/W1 = M2 T2 /W2

5 machines 5 minutes to make 5 widgets.

So, 5 * 5 /5 = 100 * T2 /100

=>T2 = 5
(option b )

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Re: If it takes 5 machines 5 minutes to make 5 widgets, how long would it [#permalink] New post   14 Apr 2023, 01:37
Bunuel wrote:
If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

A. 1 minute
B. 5 minutes
C. 10 minutes
D. 15 minutes
E. 100 minutes

\(5*5*100 = 100*t*5\)

So, \(t =5\),Answer must be (B) 5 minutes
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Re: If it takes 5 machines 5 minutes to make 5 widgets, how long would it [#permalink]
14 Apr 2023, 01:37
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