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Pani-rosa [81]
3 years ago
5

A pilot flew a 400-mile flight in 2.5 hours flying into the wind. Flying the same rate and with the same wind speed, the return

trip took only 2 hours, with a tailwind.
What was the speed of the wind?

20
40
160
180
Mathematics
2 answers:
Ivanshal [37]3 years ago
8 0

It's 20 or A

hope this helped!<3

Fittoniya [83]3 years ago
5 0

Answer:

20 miles per hour

Step-by-step explanation:

traveling against the wind was 160mph (400/2.5)

traveling with the wind was 200mph (400/2)

going against the wind is going in the negative direction of the wind speed, and going with the wind is going in a positive direction of the wind speed, therefore the wind speed is |direction1-direction2|/2, which would be |200-160|/2 = |40|/2 = 20mph

(180mph is neutral speed with no wind, with wind affecting this neutral speed ±20mph)

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We want to get rid of the coefficient on m to isolate it, so we must divide it by its coefficient. The coefficient on m is 9. So, divide m by 9. We must also divide everything else by 9.

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Plug it in--

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