Question

A tugboat goes upstream in 15 hours. The rturn trip downstream takes 10 hours. Find the speed of th tugboat without a current and the speed of current

Answer 1

i have 120/15=8
120/10=12

Answer 2

how long is the trip?

Answer 3

Like in miles or kilometers or something

Answer 4

it only ask for tugboat is ? mph and speed of the current is ? mph

Answer 5

Yeah, you need the distance, is that all the info it gave you?

Answer 6

120/15=8
120/10=12
upstram=8
downstream=12

Answer 7

yep

Answer 8

2b=20mph
b=10mph
b+c=12
10+c=12
10-12
c=2

Answer 9

i hope i got it correct

Answer 10

I'm not sure what to do if it didnt give you the distance of the trip. It doesnt look like enough info to do anything

Answer 11

ikw so thats what i cam up with

Answer 12

You're sure thats all it gave you? Where did you get 120 from?

Answer 13

ok im apologize iit has a tugboat goes 120 upstream

Answer 14

so the distance of the trip is 120 miles?

Answer 15

in 15hours.

Answer 16

yes i had to reread...

Answer 17

Alright, well distance=speed*time

so let x be the speed of the tugboat without current and let y be the speed of the current. You're gonna have 2 equations.

120=(x+y)10
120=(x-y)15

Now you distribute the numbers outside the parentheses and then solve it as a system of equations

Answer 18

so my answer is wrong?

Answer 19

what did you get for the speed of the current and for the speed of the boat?

Answer 20

10 and 2

Answer 21

2mph=speed of current
10mph=speed of boat without current

So you're right

Answer 22

oh ok cool thanks for chcking it