document.write( "Question 1148041: The ratio of kids to adult at a school festival is 11:7. Suppose there are a total of 810 kids and adults at the festival. How many adults are at the festival?\r
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\n" ); document.write( "\n" ); document.write( "I tried doing it this way
\n" ); document.write( "11/7 = 810/×
\n" ); document.write( "I then get 5670/11
\n" ); document.write( "My final answer is 515.45
\n" ); document.write( "It's wrong please help me find my error \n" ); document.write( "

Algebra.Com's Answer #769417 by ikleyn(52852) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "Let the number of adults is x.\r\n" );
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document.write( "Then the number of kids is (810-x).\r\n" );
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document.write( "The ratio of kids to adults is\r\n" );
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document.write( "     = .\r\n" );
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document.write( "It is your basic equation, which you get from the condition.\r\n" );
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document.write( "To solve it, cross multiply; then simplify\r\n" );
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document.write( "    7*(810-x) = 11x\r\n" );
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document.write( "    7*810 - 7x = 11x\r\n" );
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document.write( "    7*810 = 11x + 7x\r\n" );
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document.write( "    7*810 = 18x\r\n" );
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document.write( "    x =  = 315.          ANSWER\r\n" );
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