SOLUTION: THE PRODUCT OF THREE NUMBERS IS 945. THE FIRST NUMBER IS 60% OF SECOND NUMBER AND THE THIRD NUMBER IS 7. WHAT IS SECOND NUMBER?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: THE PRODUCT OF THREE NUMBERS IS 945. THE FIRST NUMBER IS 60% OF SECOND NUMBER AND THE THIRD NUMBER IS 7. WHAT IS SECOND NUMBER?      Log On


   

Question 272702: THE PRODUCT OF THREE NUMBERS IS 945. THE FIRST NUMBER IS 60% OF SECOND NUMBER AND THE THIRD NUMBER IS 7. WHAT IS SECOND NUMBER?
Answer by stanbon(75887) About Me  (Show Source):
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THE PRODUCT OF THREE NUMBERS IS 945. THE FIRST NUMBER IS 60% OF SECOND NUMBER AND THE THIRD NUMBER IS 7. WHAT IS SECOND NUMBER?
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3rd = 7
Let 2nd = 10x
Then 1st = 6x
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Equation:
10x*6x*7 = 945
420x^2 = 945
x^2 = 9/4
x = 3/2
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1st = 6(3/2) = 9
2nd = 10(3/2) = 15
3rd = 7
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Cheers,
Stan H.