document.write( "Question 848652: In a school 50% of the students are younger than 10, 1/20 are 10 years old and 1/10 are older than 10 but younger than 12, the remaining 70 students are 12 years or older. How many students are 10 years old?
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Algebra.Com's Answer #511232 by rvfer(117)\"\" \"About 
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0.50 younger than 10
\n" ); document.write( "0.05 are 10
\n" ); document.write( "0.10 older than 10 but younger than 12
\n" ); document.write( "70 students 12 or older
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\n" ); document.write( "0.50+0.05+0.10=0.65=65%
\n" ); document.write( "70 are 35%
\n" ); document.write( "70/0.35=200 total
\n" ); document.write( "200*0.05=10 students ten yrs old
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