Question

A motorboat travels
273km
in
7
hours going upstream. It travels
399km
going downstream in the same amount of time. What is the rate of the boat in still water and what is the rate of the current?

Answer 1

please give me the answer im one away

Answer 2

You got the last question you asked?

Answer 3

Ok, well to start this you need the rates of both streams

Answer 4

for the upstream one you do 273/7=39km an hour
downstream: 399/7=57km an hour

downstream is the one with the current so you need now a system

let me represent the boat and c represent the current

b+c=57km
b-c=39km

add them to solve for b

2b=96

b=48km<<<speed of the boat

48+c=57km

c=9km<<speed of current

Answer 5

by still water you will refer to the speed of the boat aka 57km

Answer 6

Let
x = speed of boat in still water
y = speed of water current

Use equation

distance = rate * time

273 = (x - y)*7
399 = ( x + y) * 7

Answer 7

i got that but it said i was wrong

Answer 8

*48 km

Answer 9

not sure what i did wrong. it looks right to me.