#### Answer

$\frac{12}{unknown}$=$\frac{20}{100}$

#### Work Step by Step

The whole number of injections is unknown. 12 is the part, and 20 is the percent.

Published by
Pearson

ISBN 10:
0321825535

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

$\frac{12}{unknown}$=$\frac{20}{100}$

The whole number of injections is unknown. 12 is the part, and 20 is the percent.

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