Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 2 - Section 2.4 - An Introduction to Problem Solving - Exercise Set: 57

Answer

Australia = 6 Germany = 7 Korea = 8

Work Step by Step

Let a = no. of gold medals won by Australia Let g = no. of gold medals won by Germany Let k = no. of gold medals won by Korea Since the numbers are consecutive: g = a + 1 k = (a + 1) + 1 = a + 2 Since the total number of medals is 21: a + g + k = 21 a + (a+1) + (a+2) = 21 3a + 3 = 21 3a = 18 a = 6 a=6, g = 7, k = 8
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