In 1885, first-class postage for a one-ounce letter cost $0.02. The same postage in 2015 costs $0.49.

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In 1885, first-class postage for a one-ounce letter cost $0.02. The same postage in 2015 costs $0.49. What compounded annual increase in the cost of first-class postage has been experienced over this period of time?

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Engineering Economy

ISBN: 978-0133439274

16th edition

Authors: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling

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