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3 years ago

15

It takes a boat going upstream 3 hours to cover the same distance, as it would cover in 2 hours going downstream. What is the sp

eed of the boat if the speed of the current is 3 kilometers per hour?

1 answer:

enot [183]3 years ago

3 0

Answer:

15 km

Step-by-step explanation:

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Let's look at work rates per minute.

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Together, they do 1/16 + 1/24 of the job in 1 minute, but from above, we see that together, they do 1/x of the job in 1 minute, so 1/16 + 1/24 must equal 1/x. That gives us our equation.

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