SOLUTION: Let a, b, c, be positive real numbers. If ab=48, bc=96, and ac=72, what is the value of abc?

SOLUTION: Let a, b, c, be positive real numbers. If ab=48, bc=96, and ac=72, what is the value of abc?

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Question 95219: Let a, b, c, be positive real numbers. If ab=48, bc=96, and ac=72, what is the value of abc?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!

so c=2a

divide 2 into each side
take square root of both sides a=6 a=-6
Positive numbers are required so a=6 is an answer.
ac=6c=72
c=72/6=12
ab=6b=48
b=48/6=8
Check: bc=8*12=96
EdJones
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