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tatyana61 [14]
3 years ago
10

I need to know the answer and the steps on how to work out the problem.

Mathematics
1 answer:
DaniilM [7]3 years ago
6 0
Let v be the speed of the slower plane in mph.
Then the speed of the faster plane will be (v + 55) mph.
the closing speed of the two planes is the sum of their speeds:
v + v + 55 = 2v + 55
time=\frac{distance}{speed}
3=\frac{1965}{2v+55}
Cross-multiplying, we get:
6v + 165 = 1965
6v = 1800
v = 300
The speeds of the planes are 300 mph and 355 mph.

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