Question
tugboat goes 160 miles upstream in 10 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current.
speed of tugboat is
speed of the current is
speed of tugboat is
speed of the current is
Answers
Reiny
speed of tugboat in still water -- x
speed of current ----- y
the key is that the distance is the same
so 10(x-y) = 160 or
x - y = 16
and 5(x+y) = 160
x+y = 32
add them:::
2x = 48
x = 24 , then y = 8
speed of current ----- y
the key is that the distance is the same
so 10(x-y) = 160 or
x - y = 16
and 5(x+y) = 160
x+y = 32
add them:::
2x = 48
x = 24 , then y = 8
yulie
I don't really understand what I have to do.