Prealgebra (7th Edition)

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

Chapter 7 - Section 7.1 - Percents, Decimals, and Fractions - Exercise Set: 97

Answer

4%

Work Step by Step

100% represents the whole, so the percentages for the 4 blood types should total 100%. $45\%+40\%+11\%+x\%=100\%$ $96\%+x\%=100\%$ $96\%+x\%-96\%=100\%-96\%$ $x\%=4\%$
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