SOLUTION: A plane flies 900 miles, with a tail wind, in 3 hours. It takes the same plane 5 hours to fly the 900 miles when flying against the wind. Which is the plane's speed in still air. (
Algebra.Com
Question 23795: A plane flies 900 miles, with a tail wind, in 3 hours. It takes the same plane 5 hours to fly the 900 miles when flying against the wind. Which is the plane's speed in still air. (a) 240 mph (b) 270 mph (c) 300 mph (d) 60 mph
Now I know this question is in relation to Rate times Time = Distance. But Im confused on where to put the numbers to solve the problem. Thanks so much.
Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
Let the speed of the wind be y
Let the speed of the plane be x
3(x+y)=900 ------------------> 3x+3y=900 (Equation 1)
5(x-y)=900 ------------------> 5x-5y=900 (Equation 2)
Multiply equation 1 by 5 and equation 2 by 3
15x+15y=4500 ----->Add
15x-15y=2700 ----->Add
30x=7200
x=240
Hence, the speed of the plane in still air is 240 mph.
RELATED QUESTIONS
A plane flies 900 miles with a tail wind in 3 hours. It takes the same plane 4 hours to... (answered by checkley71)
a plane flies 900 miles with a tail wind, in 3 hours. It takes the same plane 4 hours to (answered by ankor@dixie-net.com)
A plane flies 900 miles with a tail wind in 3 hours. It rakes the same plane 4 hours to... (answered by Alan3354)
A plane flies 900 miles with a tail wind in 3 hours.It takes the same plane 2 hours to... (answered by oberobic)
Please help me answer this question:
A plane flies 900 miles with a tail wind in 3... (answered by richwmiller)
Please help me with this problem:
A plane flies 900 miles with a tail wind in 3 hours.... (answered by lwsshak3)
A plane flies 300 miles with a tail wind in 1 hour. It takes the same plane 2 hours to... (answered by stanbon)
A plane flies 900 miles in 3 hours with a tail wind. It takes the sme plane 5 hours to... (answered by Paul)
A plane flies 600 miles with a tail wind in 2 hours. It takes the same plane 4 hours to... (answered by lwsshak3)