Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 9 Quadratic Relations and Conic Sections - Cumulative Review - Page 659: 43

Answer

See below.

Work Step by Step

Let $x$ be the number of students, then the number of adults is $650-x$. Then: $2x+5(650-x)=2500\\2x+3250-5x=2500\\750=3x\\x=250$ Thus $250$ students and $400$ adults attended.
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