#### 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: $1-\frac{7}{20}=\frac{13}{20}$

Published by
Pearson

ISBN 10:
0321825535

ISBN 13:
978-0-32182-553-7

a) $\frac{7}{20}$
b) $\frac{13}{20}$

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