College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.9 - Modeling with Equations - P.9 Exercises - Page 72: 51

Answer

$0.36L.$

Work Step by Step

Currently there is $3.6\cdot0.6=2.16L$ of antifreeze and the optimal is $3.6\cdot0.5=1.8L$ of antifreeze, thus we must drain and replace $2.16-1.8=0.36L.$
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