document.write( "Question 705736: 4 kids score 100. The rest score at least 70. The average is 78. How many kids in the class \n" ); document.write( "
Algebra.Com's Answer #434849 by ankor@dixie-net.com(22740)\"\" \"About 
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4 kids score 100. The rest score at least 70.
\n" ); document.write( " The average is 78. How many kids in the class.
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\n" ); document.write( "let n = number of kids in the class
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\n" ); document.write( "Av of 71, 72, 73 would not give me an integer solution so used 74 average
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\n" ); document.write( "\"%2874%28n-4%29+%2B+400%29%2Fn\" = 78
\n" ); document.write( "mult both sides by n
\n" ); document.write( "74n - 296 + 400 = 78n
\n" ); document.write( "400 - 296 = 78n - 74n
\n" ); document.write( "104 = 4n
\n" ); document.write( "n = 104/4
\n" ); document.write( "n = 26 kids \r
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