Answer
a.
$63\%$
b.
$34\%$
c.
$43\%$
Work Step by Step
a.
$22/35 = 0.63$
$0.63 \times100 = 63\%$
b.
$35+67 = 102$
$35/102 = 0.34$
$0.34*100 = 34\%$
c.
$15+14+6 = 35$
$15/35 = 0.43$
$0.43*100 = 43\%$
General, Organic, and Biological Chemistry: Structures of Life (5th Edition)
by Timberlake, Karen C.
Published by
Pearson
ISBN 10:
0321967461
ISBN 13:
978-0-32196-746-6
Chapter 1 - Chemistry in Our Lives - 1.4 Key Math Skills for Chemistry - Questions and Problems - Page 18: 1.20
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