The ratio of land and water on Earth is 1:2. In the Northern Hemisphere, the ratio is 2:3. What is the ratio of land and water in the Southern Hemisphere?
A
4:11
B
3:8
C
5:9
D
2:11
or press Space / Enter
Correct Answer 4:11
Explanation
Total Earth (30 units): Land=10, Water=20. N. Hemisphere (15 units): Land=(2/5)*15=6, Water=9. S. Hemisphere (15 units): Land=(10-6)=4, Water=(20-9)=11. Ratio = 4:11.