SOLUTION: If the average weight of three boxes is 3.1 lbs. and two boxes weigh 3.6 lbs. each, what is the weight of the third box?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: If the average weight of three boxes is 3.1 lbs. and two boxes weigh 3.6 lbs. each, what is the weight of the third box?      Log On


   

Question 941604: If the average weight of three boxes is 3.1 lbs. and two boxes weigh 3.6 lbs. each, what is the weight of the third box?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
Total weight = 3(3.1)=9.3 lbs
Two boxes weigh 3.6 each 2(3.6)=7.2 lbs
total weight - weight of two =weight of remaining
9.3 lbs- 7.2 lbs= 2.1 lb weight of third box