document.write( "Question 994722: Hello, I am in need of help. I have this problem on an optional assignment, and I cannot seem to figure it out. I do not know if this is the right department/topic area, but I will assume so. The problem is:\r
\n" );
document.write( "\n" );
document.write( "The average of 3 numbers is 22
\n" );
document.write( "The average of 2 numbers is 21.5
\n" );
document.write( "What is the third number?\r
\n" );
document.write( "\n" );
document.write( "The wording somewhat confuses me, and I cannot seem to find the solution. If you could help me, I would be very grateful. I also would want to see how I would solve this for future reference, if possible. Thank you so much! \n" );
document.write( "
Algebra.Com's Answer #613745 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "A,B, and C are the three numbers. \n" ); document.write( ". \n" ); document.write( "(A+B)/2=21.5 \n" ); document.write( "A+B=43 . Use this to Substitute for A+B below \n" ); document.write( ". \n" ); document.write( "(A+B+C)/3=22 \n" ); document.write( "A+B+C=66 Substitute for A+B from above \n" ); document.write( "43+C=66 \n" ); document.write( "C=23 \n" ); document.write( ". \n" ); document.write( "ANSWER: The third number is 23. \n" ); document.write( " |