Answer
9
Work Step by Step
Solve : 0.25x + 0.75(10-x) = 3
0.25x + 7.5 - 0.75x = 3
7.5 - 0.5x = 3
0.5x = 4.5
x = 9
Check :
LHS = 0.25x + 0.75(10-x) = 0.25(9) + 0.75(10-9) = 3
RHS = 3
LHS = RHS , Hence Verified
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - 1.2 - Linear Equations in One Variable - 1.2 Exercises - Page 87: 25
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