There are 2×105 households in Kingston County, and the average household size is 2.5 people. How many people live in the county?

Write your answer in standard form. Do not use exponents.

1 answer

To find the total number of people living in Kingston County, we will multiply the number of households by the average household size.

  1. Number of households: \( 2 \times 10^5 = 200,000 \)
  2. Average household size: \( 2.5 \)

Now, we can calculate the total population:

\[ \text{Total population} = \text{Number of households} \times \text{Average household size} = 200,000 \times 2.5 \]

Calculating this step-by-step:

\[ 200,000 \times 2.5 = 200,000 \times \frac{25}{10} = \frac{200,000 \times 25}{10} = \frac{5,000,000}{10} = 500,000 \]

Thus, the total number of people living in Kingston County is:

\[ \boxed{500000} \]

In standard form, this result is \( 500,000 \), which does not require any exponents.