Answer
Impossible.
Work Step by Step
All laque on tth could be cleaned by 100% alone, therefore anything more than 100% is physically impossible. Here, the statement is claiming it can reduce it up to 300%. 300%>100%, therefore it is impossible
Elementary Statistics (12th Edition)
by Triola, Mario F.
Published by
Pearson
ISBN 10:
0321836960
ISBN 13:
978-0-32183-696-0
Chapter 1 - Introduction to Statistics - 1-2 Statistical and Critical Thinking - Basic Skills and Concepts - Page 15: 36
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