Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 1 - Foundations for Algebra - Get Ready! - Page 1: 4

Answer

20

Work Step by Step

The greatest common factor is the greatest number that can be multiplied by a whole number to equal 40, 80, and 100. 20 can be multiplied by 2 to get 40, by 4 to get 80, and by 5 to get 100. There is no number above 20 that can be multiplied by a whole number to get 40, 80, and 100.
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