Final answer:
We calculate the total number of individuals affected by the unemployment rate decrease by first finding 2.5% of the 20 million total workforce, which equals 500,000 people. This means 500,000 fewer individuals are unemployed due to the decrease in the unemployment rate.
Step-by-step explanation:
To determine the total number of unemployed individuals when the unemployment rate decreases, we follow a two-step mathematical process using the total workforce and the change in percentage. The country's workforce is 20 million people, and the unemployment rate dropped by 2.5%.
Step 1: Calculate the percentage in terms of the workforce (2.5% of 20 million).
Step 2: Since a decrease in unemployment rate signifies that these individuals are no longer unemployed, we subtract this number from the previously unemployed.
Applying the calculations: 2.5% of 20 million is 0.025 * 20,000,000 = 500,000 people.
Therefore, the number of unemployed individuals decreased by 500,000.