Difference between revisions of "2006 AMC 10A Problems/Problem 3"
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<math>(3)(30)=5x\Longrightarrow 90=5x\Longrightarrow x=18, (B)</math> | <math>(3)(30)=5x\Longrightarrow 90=5x\Longrightarrow x=18, (B)</math> | ||
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[[Category:Introductory Algebra Problems]] | [[Category:Introductory Algebra Problems]] |
Revision as of 01:35, 11 September 2007
Problem
The ratio of Mary's age to Alice's age is 3:5. Alice is 30 years old. How many years old is Mary?
Solution
We can create the equation
Where x is Mary's age. Simplfying yields
See also
2006 AMC 10A (Problems • Answer Key • Resources) | ||
Preceded by Problem 2 |
Followed by Problem 4 | |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
All AMC 10 Problems and Solutions |