Discussion :: Chain Rule
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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?
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Answer : Option B
Explanation :
Let the required number of bottles be x.
More machines, More bottles (Direct Proportion)
More minutes, More bottles (Direct Proportion)
| Machines | 6 | : | 10 |  |
:: 270 : x |
| Time (in minutes) | 1 | : | 4 |
6 x 1 x x = 10 x 4 x 270
x =\( \frac { (10*4*270) } { (6) } \)
x = 1800.
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