Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 8 - Systems of Linear Equations and Problem Solving - 8.3 Solving Applications: Systems of Two Equations - 8.3 Exercise Set - Page 527: 14


18 double dip and 42 single dip cones.

Work Step by Step

We first write the word problem as an equation. Next, we solve the equation using substitution. Doing this, we find: $$ x+y=60 , 2.5x+4.15y=179.7 \\ \frac{5}{2}\left(60-y\right)+\frac{83}{20}y=\frac{1797}{10} \\ y=18 \\ x=60-18 \\ x=42$$
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