Question

The population of a town in the year 2017 was 4000. Every year, half the population moves away from the town. If so, choose the line plot that represents the population of the town from 2017 to 2019.

• A. Plot 2
• B. Plot 1
• C. Plot 4
• D. Plot 3

Answer 1

The correct option is B Plot 1

Every year, half of the population moves away from the town.

$\text{Population in the year 2017}=4000$

$\text{Population moving away in 2018}=\text{Half the population}=\frac{1}{2}\times 4000=\frac{4000}{2}=2000$

$\text{Remaining population in 2018}$
$=4000-2000$
$=2000$

$\text{Population moving away in 2019}=\text{Half the population}=\frac{1}{2}\times 2000=\frac{2000}{2}=1000$

$\text{Remaining population in 2019}$
$=2000-1000$
$=1000$

Plotting this data on a line plot, we get: