Question

In a kitchen there are four containers that can hold different quantities of water, as shown in the figure below.



How many liters of water can the four containers hold in all?
(Figure below)

Answer 1

Litres is a measurement of volume.

So to find the volume it can hold in total you need to add all their volumes together.

V = x + (x + 0.5) + (x + 1) + (x + 1.5)

Since all the operations are addition we can remove the brackets:

V = x + x + 0.5 + x + 1 + x + 1.5

Now we can collect all the x's together:

V = 4x + 0.5 + 1 + 1.5

Lastly, we will collect the numbers together:

V = 4x + 3