Traveling at full speed on a river, it takes 2 hours for a motorboat to travel 8 miles downstream and 21 miles back upstream. If the current's speed is 2 mph, what is the maximum speed of the boat in still water?

Question

adajiamcneal · Answer

speed of the current is 5.656854249 miles per hour if you need the work : http://www.algebra.com/algebra/homework/word/travel/Travel_Word_Problems.faq.question.208387.html

anonymous · Answer

The speed in still water is 29/4 miles per hour..
I think we dont neet the current's speed to find the speed in still water since we have upstream speed and downstream speed. 
it goes like Speed in still water = 1/2(upstream speed + downstream speed)

anonymous · Answer

i completely messed up that question it was: Traveling at full speed on a river, it takes 2 hours for a motorboat to travel 8 mils 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?

adajiamcneal · Answer

the answer is still the same just trust me I googled it xD

anonymous · Answer

thank you! im just panicking over here