How to Find a Missing Value Using Mean

The video tutorial explains how to find a missing value using the mean. It presents a problem where the weights of seven packages are known, and the weight of an eighth package needs to be determined so that the mean weight of all eight packages is 12 pounds. The tutorial guides through setting up an equation with the known weights and solving it to find the weight of the eighth package, which is calculated to be 19 pounds.

What is the mean weight of the eight packages?

What equation is used to find the weight of the 8th package?

How do you define the average?

What is the total weight of the seven packages before adding the 8th package?

What is the weight of the 8th package?