Algebra Word Problem Set Up

Question

The average of 6 numbers is n.  The average of five numbers is 11.  What is the value of the 6th number in terms of n?

Answer 1

Since the average of 5 numbers is 11 their sum ought to be 55.

 

let the unknown 6th number be x

 

Average of 6 numbers = (55 + x )/ 6

 

6n = 55 + x

 

 

Now solve for x and you will have your 6th value in terms of n.

 

 

Good luck!