Container with water

The weight of a container with water is 2.48 kg. Suppose the cast is 75% water, and the container with water weighs 0.98 kg. Determine the weight of the empty container. How much water was originally in the container?

Correct answer:

m =  0.48 kg
v =  2 kg

Step-by-step explanation:


m + v = 2.48
m+(1-75/100)·v = 0.98

m+v = 2.48
100m+25v = 98

Pivot: Row 1 ↔ Row 2
100m+25v = 98
m+v = 2.48

Row 2 - 1/100 · Row 1 → Row 2
100m+25v = 98
0.75v = 1.5


v = 1.5/0.75 = 2
m = 98-25v/100 = 98-25 · 2/100 = 0.48

m = 12/25 = 0.48
v = 2

Our linear equations calculator calculates it.

Try another example


Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Our percentage calculator will help you quickly and easily solve a variety of common percentage-related problems.
Do you have a system of equations and are looking for calculator system of linear equations?
Tip: Our volume units converter will help you convert volume units.

You need to know the following knowledge to solve this word math problem:

Units of physical quantities:

Grade of the word problem:

Related math problems and questions: