document.write( "Question 797513: In a gym class, the ratio of girls to the total number of students is 3:8 . There are 10 boys in the gym class. How many students are in the gym? \n" ); document.write( "

Algebra.Com's Answer #481827 by jerryguo41(197) $\"\"$ $\"About$

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Proportions can be written as fractions
\n" ); document.write( " $\"%28Total+Number+of+Girls%29%2F%28Total+Number+of+Students%29=%283%2F8%29\"$
\n" ); document.write( "But you only have number of boys, so you can find the proportion of boys in class by subtracting $\"1-%283%2F8%29\"$ . This means the ratio of boys to students is $\"5%2F8\"$ . Since you can only have boys or girls the remainder of the class must be boys which is why $\"1-%283%2F8%29\"$ is true.\r
\n" ); document.write( "\n" ); document.write( " $\"%28Total+Number+of+Boys%29%2F%28Total+Number+of+Students%29=%285%2F8%29\"$
\n" ); document.write( " $\"10%2F%28Total+Number+of+Students%29=%285%2F8%29\"$
\n" ); document.write( " $\"80=5%28Total+Number+of+Students%29\"$
\n" ); document.write( " $\"Total+Number+of+Students=16\"$ \n" ); document.write( "

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