Question

5 packages with a weight of 6.7lb were shipped if the mean of 4 packages is 7.2 lb whats the weight of the 5 package

Answer 1

6.7 × 5 = 32.5 pounds

7.2 × 4 = 28.8 pounds

So the weight of the fifth package is

32.5 - 28.8 = 6.7 pounds