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Operating at the same constant rate, 4 identical machines ca
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17 Oct 2017, 22:27
17 Oct 2017, 22:27
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82% (00:55) correct
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Operating at the same constant rate, 4 identical machines can produce a total of 220 candles per minute. At this rate, how many candles could 10 such machines produce in 5 minutes?
(A) 512
(B) 2,200
(C) 2,750
(D) 11,000
(E) 44,000
Kudos for correct solution.
(A) 512
(B) 2,200
(C) 2,750
(D) 11,000
(E) 44,000
Kudos for correct solution.
Re: Operating at the same constant rate, 4 identical machines ca
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18 Oct 2017, 05:35
18 Oct 2017, 05:35
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The formula in this case is \(items = machines*time*rate\). Thus, substituting, we get the rate as \(220=4*1*x\) x = 55.
Then, we can use this rate to compute the number of candles as \(items = 10*5*55 = 2,750\).
Answer C
Then, we can use this rate to compute the number of candles as \(items = 10*5*55 = 2,750\).
Answer C
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Re: Operating at the same constant rate, 4 identical machines ca
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08 Jan 2018, 10:52
08 Jan 2018, 10:52
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Expert Reply
Bunuel wrote:
Operating at the same constant rate, 4 identical machines can produce a total of 220 candles per minute. At this rate, how many candles could 10 such machines produce in 5 minutes?
(A) 512
(B) 2,200
(C) 2,750
(D) 11,000
(E) 44,000
(A) 512
(B) 2,200
(C) 2,750
(D) 11,000
(E) 44,000
We can determine the rate of 10 machines with the following proportion:
4/220 = 10/x
4x = 2200
x = 550
We know that 10 machines can produce 550 candles in one minute. Thus, in 5 minutes, 10 machines can produce 550 x 5 = 2750 candles.
Answer: C
