Question

In a kitchen there are three containers that can hold different quantities of water, as shown in the figure below. How many liters of water can the three containers hold in all

container
1)-(x-1)liters
2)-x liters
3)-(x+1) liters

answers
3x

x + 3

3x + 1

x2 + x - 1

Answer 1

3x

You achieve this by adding all them together. -1 and 1 cancel each other out, leaving 3x as the final answer.

Answer 2

Option A

Explanation:

In a kitchen there are three containers that can hold different quantities of water.

Individual capacities are

(1) (x-1) liters

(2) (x) liters

(3) (x + 1) liters

Now total amount of water these containers can contain

= (x-1) + x + ( x+1)

= 3x liters.

Option A is the answer.