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kykrilka [37]
3 years ago
7

When three pipes fill a pool, they can finish in 12 hours. Two of the pipes can finish in 18 hours if they are working together.

How long would it take a third pipe to fill the pool on its own?
Mathematics
1 answer:
Ymorist [56]3 years ago
6 0
The number of pipes * the time is a constant proportional to the pool size.

3*12 = 2*18 = 1*36. So one pipe would take 36 hours.
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Therefore, the probabilities of each of these three events E, F and G will be

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Now, the probability of pulling three green marbles out with replacement is given by

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and

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