Precalculus Enhanced with Graphing Utilities
Precalculus Enhanced with Graphing Utilities
6th Edition
ISBN: 9780321795465
Author: Michael Sullivan, Michael III Sullivan
Publisher: PEARSON
Question
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Chapter A.8, Problem 25AYU
To determine

To find: A motorboat can maintain a constant speed of 16 miles per hour relative to the water. The boat travels upstream to a certain point in 20 minutes; the return trip takes 15 minutes. What is the speed of the current?

Expert Solution & Answer
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Answer to Problem 25AYU

The speed of current is 2.29 .

Explanation of Solution

20( 16  x ) = 15( 16 + x )

320  20x = 240 + 15x

80 = 35x

x = 2.28571

x  2.29

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