Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 6 - Systems of Equations and Inequalities - 6-2 Solving Systems Using Substitution - Practice and Problem-Solving Exercises - Page 371: 23


9 adults and 2 children.

Work Step by Step

Let x be total number of adults, y be total number of children. System of equations: x+y=11 22x+15y=228 For first equation, subtract x from both sides: y=11-x Substitue value of y: 22x+15(11-x)=228 =>22x+165-15x=228 (Distributive property)-> 7x=63 -> x =9 (Combine like terms and simplify) When x=9, 22(9)+15y=228, then 198+15y=228=> 15y=30=>y=2 (Substitute x to solve for y)
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.