Question

The mean weight of the packages Joan shipped was 2.5 pounds. Joan mailed four packages, and three of them had weights of 1.7, 3.2, and 2.8 pounds.
What did the other package weigh?
2.3
2.8
3.3

Answer 1

(2.5 x4(number of packages) = 10.0. Add up the others gives you 6.7, so the last one must be 3.3)

Answer 2

3.3

Answer 3

thanks

Answer 4

welcome :D