Chapter 8.A, Problem 1QQ

A town’s population increases in one year from 100,000 to120,000. If the population is growing linearly, at a steady rate,then at the end of a second year it will be

a. 120,000. b. 140,000. c. 144,000.

To determine

What is the population at the end of a second year?

1. 120,000
2. 140,000
3. 144,000

Answer to Problem 1QQ

Solution:

The option (b) is correct.

Explanation of Solution

Given:

The population increase in one year from 100,000 to 120,000.

Calculation:

The population increase in one year from 100,000 to 120,000.

The population of the town is rising linearly.

There is equal amount increase in each year.

Now, check the increase in population in one year.

$120,000-100,000=20,000$

Now, find the population at the end of second year.

$120,000+20,000=140,000$ .

Hence, the option (b) is correct.

Conclusion:

With the help of increase population of one year, we could figure out the population at the end of second year.