The mean weight of five complete computer stations is 167.2 pounds. The weights of four of the computer stations are 158.4 pounds, 162.8 pounds, 165 pounds, and 178.2 pounds respectively. What is the weight of the fifth computer station?

Question

I'm not sure how to attempt this problem?

Answer 1

total weight = 167.2 * 5 = 836
add the four
that weight + the last one = 836

Answer 2

5 times the average...minus the four individual weights