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 372: 34

Answer

7 dimes and 12 quarters

Work Step by Step

Let call d the numbers of dimes and q the numbers of quarters dime is worth 10 cents and quarter is worth 25 cents Given: 10x+25y=370 y=x+5 10x+25(x+5)=370 (Substitution) 10x+25x+125=370 35x=245 x=7 10(7)+25y=370 70+25y=370 25y=300 y=12
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