3 years ago

The work in a office takes 150 hours to complete every week

1 answer:

3 0

You would need at least 5 people in the office.
150/32=4.6, but you cannot have 1/6 of a person so you would need to round up to 5 people.

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Let

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y--------> the rate of the current in mph

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$rate=\frac{20}{4} \\\\ rate=5mph$

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Downstream

$rate=\frac{32}{4} \\\\ rate=8mph$

$x+y=8$ equation $2$

Adds equation $1$ and equation $2$

$x-y=5\\ x+y=8\\ -----\\ 2x=13\\ x=6.5mph$

Find the value of y

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the answer is

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the rate of the current is $1.5 mph$

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