A boat can travel with a speed of 13km/hr in still water if the speed of the stream is4 km/hr find the time taken by the boat to go 68 km downstream
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Answered by
1
t
=
4
h
Explanation:
We're asked to find the time
t
it takes a boat to travel
68
km
.
We know:
speed of boat with respect to earth:
13
km/h
speed of stream with respect to earth:
4
km/h
We're given that the boat travels downstream, i.e. with the current, so the new speed of the boat is
13
km/h
+
4
km/h
=
17
km/h
The time to travel
68
km
with this speed is thus
t
=
68
km
17
km
h
=
4h
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Answered by
0
4 hour...............
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