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Elan Coil [88]
3 years ago
15

John needs to catch a train. The train arrives randomly some time between 2:00 and 3:00, waits for 20 minutes, and then leaves.

If John also arrives randomly between 2:00 and 3:00, what is the probability that the train will be there when John arrives?
Mathematics
1 answer:
Maksim231197 [3]3 years ago
3 0

Answer:

\frac{1}{16}

Step-by-step explanation:

If train arrives between 2:00 to 3:00 (60min) and waits for 20 min and leaves, probability of finding train in that 60 min is \frac{20}{60}=\frac{1}{3}.

Probability of finding John is \frac{1}{60} can arrive any minute.

now the probability of finding both john and train is \frac{1}{60}*\frac{20}{60}=\frac{1}{16}.

This is compound Probablity Problem.

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Answer:

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Step-by-step explanation:

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Percentage decrease from 2000 to 2015 = 46.5%

To find:

Number of newspapers in 2000 = ?

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Let the number of newspapers in 2000 = x

When 46.5% of the total newspapers in 2000 (x) is subtracted from the total  newspapers in 2000 (x), it will be equal to the number of newspapers in 2015.

Making the equation as per the given statement:

x-x\times 46.5\%=389\\\Rightarrow \dfrac{100x-46.5x}{100}=389\\\Rightarrow 53.5x=38900\\\Rightarrow x\approx \bold{727}

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Step-by-step explanation:

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Step-by-step explanation:

The formula of the compound continuously interest is V = Pe^{rt} , where

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answer: yes driving is difficult

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<u />

<u />

<u />

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Answer:

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