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Eight identical machines can produce 360 aluminum cans per [#permalink]

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07 Jun 2011, 14:31

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Eight identical machines can produce 360 aluminum cans per hour. If all of the machines work at the same constant rate, how many cans could 5 such machines produce in 3 hours?

I have a question, can we solve this question using the W=RT method ? Please reply.. if yes.. please tell me as i am getting wrong answer if i go that way !!

Thanks

Eight identical machines can produce 360 aluminum cans per hour. If all of the machines work at the same constant rate, how many cans could 5 such machines produce in 3 hours?

A. 675 B. 750 C. 1,800 D. 5,900 E. 7,500

(rate of one machine)*(number of machines)*(time)=(work done) --> (rate of one machine)*8*1=360 --> (rate of one machine)=45 cans per hour.

Now, 5 such machines in 3 hours can produce (rate of one machine)*(number of machines)*(time)=45*5*3=675 cans.

Re: From MitDavidDv: Problem Solving Question-Rate [#permalink]

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21 Sep 2012, 04:38

Hi Everyone,

I have a question, can we solve this question using the W=RT method ? Please reply.. if yes.. please tell me as i am getting wrong answer if i go that way !!

Re: Eight identical machines can produce 360 aluminum cans per [#permalink]

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16 Jan 2016, 10:17

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Re: Eight identical machines can produce 360 aluminum cans per [#permalink]

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05 Jul 2016, 06:49

MitDavidDv wrote:

Eight identical machines can produce 360 aluminum cans per hour. If all of the machines work at the same constant rate, how many cans could 5 such machines produce in 3 hours?

Re: Eight identical machines can produce 360 aluminum cans per [#permalink]

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29 Jun 2017, 15:50

Eight identical machines can produce 360 aluminum cans per hour. If all of the machines work at the same constant rate, how many cans could 5 such machines produce in 3 hours?

8 Machines - 360 Cans/Hour

1 Machine = 45 Cans/Hour

5 Machines in 3 Hours \(= 45 * 5 * 3 = 675\)

Hence, Answer is A _________________

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