SOLUTION: One plane can travel 30 miles per hour faster than another. One of them goes 255 miles in same time it takes the other to go 210 miles. What are their speeds?

Question 1032882: One plane can travel 30 miles per hour faster than another. One of them goes 255 miles in same time it takes the other to go 210 miles. What are their speeds?
Found 2 solutions by stanbon, MathTherapy:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
One plane can travel 30 miles per hour faster than another. One of them goes 255 miles in same time it takes the other to go 210 miles. What are their speeds?
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Equation::
time = time
255/(x+55) = 210/x
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255x = 210x + 210*55
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45x = 210*55
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x = (11/9)210
x = 256 2/3 mph
x + 55 = 311 2/3 mph
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Cheers,
Stan H.
Answer by MathTherapy(10557) (Show Source): You can put this solution on YOUR website!

One plane can travel 30 miles per hour faster than another. One of them goes 255 miles in same time it takes the other to go 210 miles. What are their speeds?

Faster plane's speed:
Slower plane's speed:

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