Question

Asked Oct 24, 2019

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Step 1

Let he rows to point C which is in the middle of B and D. Then he runs to B.

Let C is x miles away from D. If x=0 then C=D , if x=8 then C=B.

So if we find x then we can find which will be the best way for him.

Step 2

CD=x, BC=8-x.

We need to find AC= ? We will use Pythagorean theorem.

AC= sqrt(x^2+9)

Step 3

Time = Distance/ Speed

For rowing Distance = sqrt(x^2+9) miles and speed= 6 mi/hr

For runnin...

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