Answer
$\frac{1}{9}$
Work Step by Step
2 teachers for 18 students is $\frac{2}{18}$
$\frac{2}{18}=\frac{2\div2}{18\div2}=\frac{1}{9}$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 6 - Review - Page 461: 57
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