Answer
36%
Work Step by Step
There are 50 students (12+18+20) and we want to see what percentage of students got a B (18 students).
$18\div50=.36$
Take .36 x 100 to get a percentage
.36 x 100 = 36%
Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)
by Timberlake, Karen C.
Published by
Prentice Hall
ISBN 10:
0321908449
ISBN 13:
978-0-32190-844-5
Chapter 1 - Section 1.4 - Key Math Skills for Chemistry - Additional Questions and Problems - Page 21: 1.46a
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