3 years ago

35. A pilot can travel 400 miles with the win

Mathematics

1 answer:

fgiga [73]3 years ago

5 0

Answer:

The wind speed is 20 miles per hour.

Step-by-step explanation:

Speed = distance/time.

With the wind

230 + w = 400 / t where w is the speed of the wind.

Against the wind:

230 - w = 336/t

From the above equations:

t = 400/ (230 + w)

t = 336/ (230 - w) So:

400/ (230 + w) = 336/ (230 - w)

336(230 + w) = 400(230 - w)

77280 + 336w = 92000 - 400w

736w = 92000 - 77280 = 14720

w = 14720 / 736

w = 20.

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