2000 AMC 12 Problems/Problem 20
Revision as of 09:32, 17 May 2009 by Edward130603 (talk | contribs) (2000 AMC 12 Problems/Problem 20 moved to 2000 AMC 12 Problems/Problem 200: error)
Problem
If and are positive numbers satisfying
Then what is the value of ?
Contents
[hide]Solution
Solution 1
Multiplying all three expressions together,
Thus
Solution 2
We have a system of three equations and three variables, so we can apply repeated substitution.
Multiplying out the denominator and simplification yields , so . Substituting leads to , and the product of these three variables is .
See also
2000 AMC 12 (Problems • Answer Key • Resources) | |
Preceded by Problem 19 |
Followed by Problem 21 |
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All AMC 12 Problems and Solutions |