I need steps for figuring out this problem. Need the speed of the current on return trip
in Calculus Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Let the speed of the current be c. I suspect the boat’s speed is measured in still water so the effective speed against the current is 20-c and with the current it’s 20+c, so it takes longer to travel upstream.

Time=distance/speed. The distance is constant so we can write distance=60(20-c)=30(20+c).

2(20-c)=20+c, 40-2c=20+c, 3c=20, c=20/3mph=6⅔mph. The speed of the current cannot vary.

by Top Rated User (716k points)

Related questions

Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
84,485 questions
89,386 answers
7,999 users