Answer
$\dfrac{1}{4}$
or, $25 \%$
Work Step by Step
The probability of not having to wait at least $4$ minutes can be computed as:
$P=\dfrac{16-12}{0-16}\\=\dfrac{4}{16}\\=\dfrac{1}{4}$
or, $25 \%$
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 10 - Area - 10-8 Geometric Probability - Practice and Problem-Solving Exercises - Page 671: 14
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