Answer
25 students
Work Step by Step
(0.8)(0.8)(0.75)(0.75)(x) = 9
0.36x = 9
0.36x / 0.36 = 9 / 0.36
x = 25
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 2 - Solving Equations - 2-9 Percents - Practice and Problem-Solving Exercises - Page 143: 53
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