Algebra 1: Common Core (15th Edition)

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

Chapter 12 - Data Analysis and Probability - Chapter Test - Page 791: 10

Answer

40

Work Step by Step

You have 10 total number of weights and you have to find what percent is no more than 12.5 kg. You have 4 weights which are less than or equal to 12.5kg. Write it as a ratio 4:10 or $\frac{4}{10}$=0.4. To change 0.4 to a percent, move the decimal two places to the right so it is 40%. The percentile rank of a weight of 12.5 kg is 40.
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