Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?
Correct answer: D. 1800
- A. 2700
- B. 1080
- C. 450
- D. 1800
Explanation
Six machines produce 270 bottles per minute, so one machine produces 270/6 = 45 bottles per minute. Ten machines produce 10 x 45 = 450 bottles per minute, and in 4 minutes they produce 450 x 4 = 1,800 bottles. The likely mistake is 2,700 bottles, which applies the original six-machine output to the wrong time or machine count.
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