SOLUTION: A plane on a search mission flew east from an airport, turned, and flew west back to the airport. The plane cruised at 300 km/h when flying east, and 400 km/h when flying west. The

Question 484182: A plane on a search mission flew east from an airport, turned, and flew west back to the airport. The plane cruised at 300 km/h when flying east, and 400 km/h when flying west. The plane was in the air for 7 hours. How far did from the airport did the plane travel?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let distance be x miles
time forward + time return = 7 hours
t= d/r
x/400 + x/300 =7
LCD = 1200
1200 *x/400 + 1200*x/300= 1200*7
3x+4x=8400
7x=8400
x=1200 miles
m.ananth@hotmail.ca
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