Concept explainers
(a)
To calculate: To write a direct variation equation relating the population
(a)
Answer to Problem 8.5MPS
The equation relating the population
Explanation of Solution
Given information: The amount of water used in a community varies directly with the population. About
Calculation:
Let the population be
Let the amount of water be
Given that about
Therefore,
1 people used
Thus, equation relating the population
Conclusion:
Hence, equation relating the population
(b)
To calculate: To estimate the amount of water that will be needed for
(b)
Answer to Problem 8.5MPS
The amount of water needed is
Explanation of Solution
Given information: The amount of water used in a community varies directly with the population. About
Calculation:
Equation relating the population
Substituting the values,
Conclusion:
Hence, the amount of water needed is
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Pre-Algebra Student Edition
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