Chapter 7.1, Problem 44PPS

i.

To determine

Calculate percent as a fraction for each continent.

  

Answer to Problem 44PPS

Asia, 59.4% = 0.594

Africa, 14.2% = 0.142

Europe, 12.3% = 0.123

North America, 7.9% = 0.079

South America, 5.7% = 0.057

Australia, 0.5% = 0.005

Explanation of Solution

Given:

  

Calculation:

Here, we have to convert percent as a fraction. When any number is divided by 100, then decimal point moves to left of the number.

We have percent of population for each continent,

For Asia,

  $59.4\%=\frac{59.4}{100}=0.594$

  $59.4\%=\frac{59.4}{100}=0.594$

For Africa,

  $14.2\%=\frac{14.2}{100}=0.142$

For Europe,

  $12.3\%=\frac{12.3}{100}=0.123$

For North America,

  $7.9\%=\frac{7.9}{100}=0.079$

For South America,

  $5.7\%=\frac{5.7}{100}=0.057$

For Australia,

  $0.5\%=\frac{0.5}{100}=0.005$

Conclusion:

Thus, we are able to convert percent of population of given continent into fraction.

ii.

To determine

Calculate fraction of population in Americas.

Answer to Problem 44PPS

Fraction of population in Americas is 0.136

Explanation of Solution

Given:

  

Calculation:

Here, we have to consider population of north and south America.

Percent population in America is,

North America, 7.9%

South America, 5.7%

Total population in Americas = 7.9%+5.7% = 13.6%

Total population of America in fraction is given as,

  $13.6\%=\frac{13.6}{100}=0.136$

  $13.6\%=\frac{13.6}{100}=0.136$

Conclusion:

Therefore, we can calculate fraction of population of America from percent population.

iii.

To determine

Calculate total population in Asia.

Answer to Problem 44PPS

Total population in Asia is 3.861 billion.

Explanation of Solution

Given:

World population = 6.5 billion

  

Calculation:

We have world population equals to 6.5 billion.

Percent population in Asia is 59.4

Hence, total population in Asia can be determined by,

  $13.6\%=\frac{13.6}{100}=0.136$

  $\begin{array}{l}PopulationinAsia=59.4\%ofWorldpopulation\\ =59.4\%of6.5billion\\ =\frac{59.4}{100}\times 6.5billion\\ =3.861billion\end{array}$

Conclusion:

Therefore, we can calculate total population of Asia from its percent population and world population using simple fraction method.