document.write( "Question 414633: If the ratio of boys to girls in a class is 3:5, what fraction of the class are boys? \n" ); document.write( "

Algebra.Com's Answer #290848 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "If the ratio of boys to girls in a class is 3:5
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document.write( " 3/5 = b/g = b/(C-b)
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document.write( " 3(C-b) = 5b
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document.write( "  3C = b(5+3)
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document.write( "  3/8C = b
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document.write( "fraction of the class who are boys is  3/(3+5) = 3/8\r
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document.write( "For example:  40 in a class:  3/8*40 = 15 boys (40-15 = 25 girls) 
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document.write( "  wihich gives the proportion: 3/5 = 15/25 \n" );
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