Lake Chad in Africa had a surface area of about 10,000 square miles in 1963. Because of climate changes and increased water usag
e by humans, the surface area decreases to about 850 square miles in 2001. By what percent did the surface area change from 1963 to 2001?
1 answer:
Answer:
Answer is 91.5%
Step-by-step explanation:
In 1963= 10,000 sq miles; In 2001= 850 sq miles
- Now applying formula of percentage of decrease we get:
% = Decrease in Amount/ Actual Amount
- Applying values in formula:
= 10000-850/10000
= 9150/10000
% = 0.915
In percentage we get 91.5%
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