Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 4 - Section 4.2 - Factors and Simplest Form - Exercise Set: 85

Answer

$\frac{1}{25}$

Work Step by Step

The table shows 3 with the AB+ blood type and 1 with the AB- blood type, so 4 ($3+1$) have type AB. The whole set of blood donors contained 100. $\frac{4}{100}=\frac{4\div4}{100\div4}=\frac{1}{25}$
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