Question

The total fertility rate (TFR) of a country is the average number of births per woman in that country. In Country W the TFR went from 5.0 in 1995 down to 3.0 in 2005. What is the percent change in the TFR in Country W from 1995 to 2005

Answer 1

Decrease in TFR of 40%.

Explanation:

Given that:

TFR (Total Fertility Rate) in 1995 = 5

TFR (Total Fertility Rate) in 2005 = 3

To find:

Percentage change in TFR from 1995 to 2005 = ?

Solution:

First of all, let us have a look at the formula for calculating the percentage change in any quantity.

Let p be the old value and

q be the new value.

Then percentage change is given as:

`Percentage\ change = (New\ Value - Old\ Value)/(Old\ Value) * 100`

Here, Old value is 5

New value is 3.

`Percentage\ change = (3 - 5)/(5) * 100\\\Rightarrow Percentage\ change = (- 2)/(5) * 100\\\Rightarrow Percentage\ change = - 40\%`

Negative sign means there is a decrease of 40%.

So, Decrease in TFR of 40% is the answer.