The population of Bengaluru in 2025 is about 250% of its population in 2000. If the population in 2000 was 50 lakhs Class 8

The population of Bengaluru in 2025 is about 250% of its population in 2000. If the population in 2000 was 50 lakhs Class 8

Question 1.

The population of Bengaluru in 2025 is about 250% of its population in 2000. If the population in 2000 was 50 lakhs, what is the population in 2025? Class 8

Solution:

Required population

= 250% of 50 lakhs

= [latex]\frac{250}{100}[/latex] × 50 lakhs

= 125 lakhs.

Question 2.

The population of the world in 2025 is about 8.2 billion. The populations of some countries in 2025 are given. Match them with their approximate percentage share of the worldwide population. [Hint: Writing these numbers in the standard form and estimating can help]. Class 8

Solution:

Germany ↔ 1%, India ↔ 18%,

Bangladesh ↔ 2%, USA ↔ 4%.

Germany = [latex]\frac{830}{8200}[/latex] × 100 = [latex]\frac{83}{82}[/latex] = 1%.

India = [latex]\frac{1.46}{8.2}[/latex] × 100 = 17.8%

= 18% (approx.).

Bangladesh = [latex]\frac{175}{8200}[/latex] × 100 = 2%.

USA = [latex]\frac{347}{8200}[/latex] × 100 = 4%.