Question

The population of a town decreased from 8000 to 7520. Find the percentage decrease.​

Answer 1

Given:

A town with

• Original Population = 8000
• Decreased Polulation = 7520

What to find?

Decreased Percentage

How to find?

To find the decreased percentage we will use the formula $\boxed{Decreased\:\%=\dfrac{Oringinal\:Population - Decreased\:Population}{Original\:Population}\times100}$

and substitute the values and solve.

Solution:

Using the formula,

⇒ $Decreased\:\%=\dfrac{Oringinal\:Population - Decreased\:Population}{Original\:Population}\times100$

Substitute the values,

⇒ $Decreased\:\%=\dfrac{8000 - 7520}{8000}\times100$

Subtract the numbers in the numerator,

⇒ $Decreased\:\%=\dfrac{480}{8000}\times100$

Cancel the zeros in 480, 8000 and 100,

⇒ $Decreased\:\%=\dfrac{48}{8}$

Divide 48 by 8,

⇒ $Decreased\:\%=6\:\%$

∴ So, the decreased percentage is 6 %.