Chris wraps presents at a local gift shop. If it takes 1.3 meters of wrapping paper per present, how many can Chris wrap if he has 50 meters of wrapping paper?

A 30 gallon overhead tank was slowly filled with water through a tap. The amount of water (W, in gallons) that is filled over a period of t hours can be found using W = 3.75(t). If the tap is opened at 7 AM and closed at 3 PM, how much water would be in the tank? Assume that the tank is empty before opening the tap.

The ratio (by volume) of milk to water in a certain solution is 3 to 8. If the total volume of the solution is 187 cubic feet, what is the volume of water in the solution?