Algebra 1

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

Chapter 6 - Systems of Equations and Inequalities - 6-4 Application of Linear Systems - Practice and Problem-Solving Exercises - Page 386: 9


950 dollars invested in account A and 550 dollars in account B

Work Step by Step

Let call "a" the amount of money invested in account A and "b" the amount of money invested in account B Given: a+b=1500 0.05a+0.04b=69.50 or 5a+4b=6950 a=1500-b 5(1500-b)+4b=6950 7500-5b+4b=6950 -b=-550 => b=550 a=1500-550=950
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