document.write( "Question 215969: The arithmetic mean (or average) of A, B and C is 10. The value of A is six less than the value of B, and the value of C is three more than the value of B. What is the value of C? \n" ); document.write( "
Algebra.Com's Answer #163142 by rfer(16322)\"\" \"About 
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((b-6)+b+(b+3))/3=10
\n" ); document.write( "(3b-3)/3=10
\n" ); document.write( "3b-3=30
\n" ); document.write( "3b=33
\n" ); document.write( "b=11
\n" ); document.write( "a=5
\n" ); document.write( "c=14
\n" ); document.write( "
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