Question 217461
An empty 5 gallon water jug weighs 0.75 lbs.
 With 3 cups of water inside, the jug weighs 2.25 lbs. 
Predict the weight of the jug with 5 cups of water inside.
:
Find the weight of the 3 cups of water
:
Jug&water - emptyJug = 3 cups of water
;
2.25 - .75 = 1.5 lb is the weight of 3 cups
;
Find the weight of 1 cup of water
{{{1.5/3}}} = .5 lb weight of 1 cup
:
"Predict the weight of the jug with 5 cups of water inside."
:
Jug + 5 cups = total weight
.75 + 5(.5) =
.75 + 2.5 = 3.25 lb