boat travels 12 km in the direction of
down stream and returns after 3 hours. If
the speed of the stream is 3km/hr, what
is the speed of the boat in still water?
b) 8 km/h
d) 12 km/hr
a) 9 km/hr
c) 6 km/hr​
Answers
Answered by
2
Answer:
d is right answer
mark me brainlist if I right
Answered by
1
Answer:
Option D
Step-by-step explanation:
Speed of the boat in still water = 12 km/hr
Speed downstream
=
45
3
= 15 km/hr
Speed of the stream = 15-12 = 3 km/hr
Speed upstream = 12-3 = 9 km/hr
Time taken to cover 45 km upstream
=
45
9
= 5 hours
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