Question

In 1975, the consumption of water for human use was
about 3850 cu.km/year. It increased to about 6000
cu.km/year in the year 2000. Find the per cent increase in
the consumption of water from 1975 to 2000. Also, find
the annual per cent increase in consumption (assuming
water consumption increases uniformly).

Answer 1

Answer:

Percentage of consumption Increase is 55.844% and the Percentage increase annually is 2.23 %

Step-by-step explanation:

Consider the provided information.

It is given that in 1975, the consumption of water for human use was about 3850 cu.km/year. It increased to about 6000 cu.km/year in the year 2000.

First find how much consumption of water increase.

6000-3850 = 2150 cu.km/year

The consumption of water increase 2150 cu.km/year now convert it into percentage

Percentage of consumption Increase = (Increase / Original) × 100

Percentage of consumption Increase =  (2150 / 3850) × 100

Percentage of consumption Increase =  0.55844 × 100

Percentage of consumption Increase =  55.844%

Now find percentage increase annually:

To find the annual per cent increase in consumption simply divide the percentage of consumption increase with total number of years form 1975 to 2000.

2000 - 1975 =75

The Percentage increase annually is = 55.84% / 25

The Percentage increase annually is = 2.23 %

Hence, Percentage of consumption Increase is 55.844% and the Percentage increase annually is 2.23 %

Answer 2

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