Ratio and Proportion
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http://www.lerc.nasa.gov/Other_Groups/K12/p_test/math_9/math_p_q10.html  


NASA Lewis Learning Technologies Project  
If the ratio of boys to girls is 5 to 8 and there are 40 girls, which proportion should you use to find out the number of boys? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.  


Levels:  Elementary, Middle School (68), High School (912) 
Languages:  English 
Resource Types:  Problems/Puzzles, Web Interactive/Java 
Math Topics:  Ratio/Proportion 
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