An airplane can travel 370mph in still air. If it travels 2737 miles with the wind in the same length of time it travels 2443 miles against the wind, what is the speed of the wind?
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Step-by-step explanation:
Let, the speed be= s
s= d/t (d=distance, t=time, s=speed)
so, {W= wind}
With wind= 2737 ÷ (370+ W) .....(i)
Against " = 2443 ÷ (370- W) ...... (ii)
equaling both (i) & (ii)
2737 x (370-W) = 2443 x (370+ W)
1012690 - 2737 W = 903910 + 2443W
=> -(2737+2443)W = 903910 - 1012690
=> -5180W = -108780
=> W= 108780/ 5180
S of W= 21 mph
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