Difference between revisions of "2006 AMC 12A Problems/Problem 7"
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== Problem == | == Problem == | ||
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| + | Mary is <math>20%</math> older than Sally, and Sally is <math>40%</math> younger than Danielle. The sum of their ages is <math>23.2</math> years. How old will Mary be on her next birthday? | ||
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| + | <math> \mathrm{(A) \ } 7\qquad \mathrm{(B) \ } 8\qquad \mathrm{(C) \ } 9\qquad \mathrm{(D) \ } 10\qquad \mathrm{(E) \ } 11</math> | ||
== Solution == | == Solution == | ||
Revision as of 22:43, 10 July 2006
Problem
Mary is $20%$ (Error compiling LaTeX. Unknown error_msg) older than Sally, and Sally is $40%$ (Error compiling LaTeX. Unknown error_msg) younger than Danielle. The sum of their ages is 
years. How old will Mary be on her next birthday?
