Answer
a) $\frac{7}{20}$
b) $\frac{13}{20}$
Work Step by Step
a) Portion that used electronic record keeping: $\frac{119}{340}$=$\frac{7}{20}$
b) Portion that did not use it: $1-\frac{7}{20}=\frac{13}{20}$
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 6 - Percent - 6.2 Percents and Fractions - 6.2 Exercises - Page 402: 80
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