35. a pilot can travel 400 miles with the win
amount of time as 336 miles against the wind. find
of the wind if the pilot's speed in still air is 230 mi
hour.
the wind in the same
ind. find the speed
is 230 miles per

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.

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following

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step-by-step explanation: