Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 5 - Ratio and Proportion - 5.2 Rates - 5.2 Exercises - Page 346: 40

Answer

10 cents per minute

Work Step by Step

Plan B 3 minutes per day $\times$ 30 days $\times$ 0.40 dollars per minute= 36 dollars extra per month (36 dollars extra+59.95 monthly charge)$\div$(900 anytime minutes + 900 extra minutes) 95.95$\div$990=0.10 per minute
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