document.write( "Question 800599: Problem: The average of a set of four integers is 14. When a fifth number is included in the set, the average of the set increases to 16. What is the 5th number?\r
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document.write( "Question: I know the 5th number is 24 because I checked for the answer, but I do not know how to solve it. How would this problem be solved? \n" );
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Algebra.Com's Answer #483148 by Finavon(81)![]() ![]() ![]() You can put this solution on YOUR website! 5 numbers a,b,c,d,e \n" ); document.write( " \n" ); document.write( "we know a+b+c+d=14*4=56 \n" ); document.write( "and a+b+c+d+e=16=5=80 \n" ); document.write( "so e = (a+b+c+d+e) - (a+b+c+d) = 80-56 = 24 \n" ); document.write( "5th integer is 24 \n" ); document.write( " |