SOLUTION: If two numbers are in the ratio of 3 is to 7,and if the difference between their squares is 360, what are these two numbers?

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Question 956901: If two numbers are in the ratio of 3 is to 7,and if the difference between their squares is 360, what are these two numbers?
Answer by stanbon(75887) About Me  (Show Source):
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If two numbers are in the ratio of 3 is to 7,and if the difference between their squares is 360, what are these two numbers?
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Two numbers:: 3x and 7x
Equation:
(7x)^2 - (3x)^2 = 360
49x^2 - 9x^2 = 360
40x^2 = 360
x^2 = 9
x = 3
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3x = 9
7x = 21