Traveling at full speed on a river, it takes 2 hours for a motor boat to travel 8 miles downstream and 4 miles back upstream. if the current's speed is 2 mph, what is the maximum speed of the boat in still water?
Thank you for the opportunity to help you with your question!
Going upstream the boat goes 8 miles in two hours or 4mph. Going downstream the boat goes 4 miles in 2 hours or 2mph. So knowing this I would say in still water the boat should have a maximum speed of 3mph. I do not think the current's speed affects the problem.
Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 18th, 2015
Did you know? You can earn $20 for every friend you invite to Studypool!