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A plane flies between two cities, The wind speed is 24 km / h, it takes 2 hours and 50 minutes to follow the wind. It takes 3 hours to fly against the wind. To find the distance between the two cities and the speed of the aircraft itself, we need to use the one member first-order equation!
2 hours 50 minutes = 17 / 6 hours
If the speed is x km / h, the distance is (24 + x) 17 / 6 km
（X+24）·17/6＝(X-24)·3
X＝840
（24+X）17/6＝1008
A: the speed is 840 km / h and the distance is 1008 km
If you don't know, come to me again, ha ha
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