Michael needs to access a point 14 km downstream on the opposite side of a straight river that is 4 km wide. See diagram below. Assume there is minimal to no current in the river. Give 3 decimal places when necessary.

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Michael needs to access a point 14 km downstream on the opposite side of a straight river that is 4 km
wide. See diagram below. Assume there is minimal to no current in the river. Give 3 decimal places when
necessary.
Start
End
He can row at rate of 4 km per hour and run at a rate of 7 km per hour. Michael has a few basic options for
this trip.
• OPTION 1: He can row straight across the river and then run downriver to his destination.
• OPTION 2: He can row the entire distance directly to his destination.
• OPTION 3: He can row to a point r km downriver and then run the rest of the way to his destination.
a) How long would it take in total for OPTION 1 to row straight across the river and then run downriver to
the final destination? Hint: Use distance
rate x time.
OPTION 1 takes
hours
b) How long would it take for OPTION 2 to row the entire distance díagonally directly to the destination?
OPTION 2 takes
hours
c) Find the Optimal Solution: How far downstream on the opposite side of the river should Michael land in
order to Minimize the amount of Time required to arrive at the destination?
OPTION 3: I =
km for a Minimal Total Time of
hours.
Transcribed Image Text:Michael needs to access a point 14 km downstream on the opposite side of a straight river that is 4 km wide. See diagram below. Assume there is minimal to no current in the river. Give 3 decimal places when necessary. Start End He can row at rate of 4 km per hour and run at a rate of 7 km per hour. Michael has a few basic options for this trip. • OPTION 1: He can row straight across the river and then run downriver to his destination. • OPTION 2: He can row the entire distance directly to his destination. • OPTION 3: He can row to a point r km downriver and then run the rest of the way to his destination. a) How long would it take in total for OPTION 1 to row straight across the river and then run downriver to the final destination? Hint: Use distance rate x time. OPTION 1 takes hours b) How long would it take for OPTION 2 to row the entire distance díagonally directly to the destination? OPTION 2 takes hours c) Find the Optimal Solution: How far downstream on the opposite side of the river should Michael land in order to Minimize the amount of Time required to arrive at the destination? OPTION 3: I = km for a Minimal Total Time of hours.
Expert Solution
Given

Michael needs to access a point 14 km downstream on the opposite side of a straight river that is 4 km wide. 

He can row at rate of 4 km per hour and run at a rate of 7 km per hour. 

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