document.write( "Question 428643: There are 1200 pupils in a secondary school. The ratio if girls to boys is 5:7. How many boys and girls are there in the school? \n" ); document.write( "

Algebra.Com's Answer #297891 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "1200 pupils in a secondary school
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document.write( "Let x and (1200-x)represent the number of girls and boys respectively
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document.write( "Question Set Up the Proportion***\r
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document.write( "   | Cross Multiplying 
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document.write( " 7x = 5(1200-x)
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document.write( " 12x = 6000
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document.write( "  x =  500, the number of girls. the number of boys is 700  (1200-500)\r
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document.write( "CHECKING our Answer***
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document.write( "  5/7 = 500/700 \n" );
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