Question

how many more people owned a ps3 than owned a xbox 360?

Explanation:

Step1: Find the number of people who owned PS3

Each block = 2 people. PS3 has 9 blocks. So the number of people who owned PS3 is \(9\times2 = 18\) people.

Step2: Find the number of people who owned Xbox 360

Xbox 360 has 7 blocks. So the number of people who owned Xbox 360 is \(7\times2=14\) people.

Step3: Calculate the difference

Subtract the number of people who owned Xbox 360 from the number of people who owned PS3. \(18 - 14=4\)

Answer:

4