to accommodate the rapid human population growth, the water supply should increase by-
a. 5% for 15 years
b. 20% for 15 years
c. 50% for 10 years
d. 10% each year over next 2 decades
To determine the increase in the water supply needed to accommodate rapid human population growth, we can evaluate the options provided:
a. 5% for 15 years: To calculate the increase using a constant rate of 5% annually for 15 years, we can use the compound interest formula, where the initial amount (i.e., current water supply) is multiplied by (1 + rate)^time period.
Increase = Current Water Supply * (1 + Rate)^Time Period
Increase = Current Water Supply * (1 + 0.05)^15
b. 20% for 15 years: Similarly, we can calculate the increase using a constant rate of 20% annually for 15 years:
Increase = Current Water Supply * (1 + 0.20)^15
c. 50% for 10 years: Here, we calculate the increase using a constant rate of 50% annually for 10 years:
Increase = Current Water Supply * (1 + 0.50)^10
d. 10% each year over the next 2 decades: To calculate the increase using a constant rate of 10% annually over two decades (20 years), we can use the same compound interest formula:
Increase = Current Water Supply * (1 + 0.10)^20
By evaluating these options, we can determine which one provides the most significant increase in the water supply to meet the needs of the rapidly growing population.
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