Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 3 - Adding and Subtracting Fractions - 3.2 Least Common Multiples - 3.2 Exercises - Page 211: 13

Answer

100

Work Step by Step

Multiples of 50: 50, 100, 150 In order to find the LCM of 20 and 50, we must find the first multiple of 50 that is also divisible by 20. 50 is not divisible by 20. $100\div20=5$ Therefore, 100 is the LCM of 20 and 50.
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