SOLUTION: An air force plane flies at a speed that is 30 kilometers per hour faster than a cargo plane. The air force plane flies 500 km in the amount of time that the cargo plane flies 440
Algebra ->
Expressions-with-variables
-> SOLUTION: An air force plane flies at a speed that is 30 kilometers per hour faster than a cargo plane. The air force plane flies 500 km in the amount of time that the cargo plane flies 440
Log On
Question 1167998: An air force plane flies at a speed that is 30 kilometers per hour faster than a cargo plane. The air force plane flies 500 km in the amount of time that the cargo plane flies 440 km. Find the speed of each plane. Found 2 solutions by VFBundy, MathTherapy:Answer by VFBundy(438) (Show Source):
You can put this solution on YOUR website! Cargo plane
Distance = 400
Rate = r
Time = 400/r Air force plane
Distance = 500
Rate = r + 30
Time = 500/(r + 30)
400/r = 500/(r + 30)
400(r + 30) = 500r
400r + 12000 = 500r
100r = 12000
r = 120 Cargo plane
Rate = r = 120 Air force plane
Rate = r + 30 = 150
You can put this solution on YOUR website!
An air force plane flies at a speed that is 30 kilometers per hour faster than a cargo plane. The air force plane flies 500 km in the amount of time that the cargo plane flies 440 km. Find the speed of each plane.
