SOLUTION: Two planes, which are 3080 miles apart, fly toward each othe. Their speeds differ by 70 mph. If they pass each other in 4 hours, what is the speed of each?

Question 896204: Two planes, which are 3080 miles apart, fly toward each othe. Their speeds differ by 70 mph. If they pass each other in 4 hours, what is the speed of each?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Two planes, which are 3080 miles apart, fly toward each other. Their speeds differ by 70 mph. If they pass each other in 4 hours, what is the speed of each?
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let x=speed of faster plane
x-70=speed of slower plane
x+x-70=2x-70=speed at which planes approach each other
distance/speed=travel time
..
3080/2x-70=4
3080=8x-280
8x=3360
x=420
x-70=350
speed of faster plane: 420 mph
speed of slower plane: 350 mph
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