Explanation Given: r = 0.02 Explanation: Let consumption be one units. The consumption gets doubled to two units. So, need to find the time after which the consumption is doubled. Since the consumption rate is theannual rate i = r = 0.02 . Use the above values in the equation of compound amount to find t as P ( 1 + i ) n = A ( 1 + i ) n = 2 1.02 n = 2 Take log both sides to get log ( 1.02 n ) = log 2 Use the logarithmic property, log x r = r log x

11th Edition

ISBN: 9780321979438

Author: Margaret L. Lial, Raymond N. Greenwell, Nathan P. Ritchey

Publisher: PEARSON

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Chapter 5.1, Problem 78E

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The number of years before which the electric utilities will need to double their generating capacity if the demand of electricity is increased at 2% per year.

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Chapter 5.1, Problem 77E

Chapter 5.1, Problem 79E

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The number of years before which the electric utilities will need to double their generating capacity if the demand of electricity is increased at 2 % per year.

Solution Summary: The author calculates the number of years before which the electric utilities will need to double their generating capacity if the demand of electricity is increased at 2% per year.

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The number of years before which the electric utilities will need to double their generating capacity if the demand of electricity is increased at 2% per year.

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Chapter 5 Solutions