Question

Kevin moved from a city to a small town. The population of the city is 8*10^4 is about 20 times as great as the small town. What is the approximate population of the small town?

Answer 1

Given:

Population of city =
`8* 10^4`

It is about 20 times as great as the small town.

To find:

The approximate population of the small town.

Solution:

Population of city is about 20 times as great as the small town. It means,

`\text{Population of city}=20* \text{Population of small town}`

`\frac{\text{Population of city}}{20}=\text{Population of small town}`

On substituting Population of city =
`8* 10^4`, we get

`\text{Population of small town}=(8* 10^4)/(20)`

`\text{Population of small town}=(8* 10* 10^3)/(20)`

`\text{Population of small town}=4* 10^3`

Therefore, the population of the small town is
`4* 10^3`.