document.write( "Question 467472: There are 357 seniors in Harris High School. The ratio of boys to girls is 7:10. How many boys are in the senior class? (A). 117. (B). 147. (C). 107. (D). 210 \n" ); document.write( "
Algebra.Com's Answer #320758 by algebrahouse.com(1659)\"\" \"About 
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boys to girls is 7:10, then
\n" ); document.write( "boys to total is 7:17\r
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\n" ); document.write( "\n" ); document.write( "7 boys / 17 total = x boys / 357 total {set up a proportion}
\n" ); document.write( "17x = 7(357) {cross-multiplied}
\n" ); document.write( "17x = 2499 {multiplied 7 by 357}
\n" ); document.write( "x = 147 {divided both sides by 17}\r
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\n" ); document.write( "\n" ); document.write( "B.) 147 boys
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