the speed of boat in still water is 9km/h and the speed of the stream is 2km/h find the hours taken by the boat to go 35km upstream
Answers
Answered by
0
Answer:
4.5 km/hr
Step-by-step explanation:
Speed of boat =9 km/hr
Speed of stream =x km/hr
Speed of boat downstream = speed of boat + Speed of stream
=(9+x) km/hr
Distance covered by boat in 4 hrs upstream =54 km
Speed of boat upstream (9+x)=
4
54
=13
2
1
x=13
2
1
−9 km/hr=4.5 km/hr
Answered by
1
Answer:
speed of boat - 9km/h
speed of river - 2km/h
speed of boat downstream - speed of boat+sped of river = 11kmph
speed of boat upstream - speed of boat - speed of river = 7kmph
time taken = 35km ÷ 7 km/h
= 5 hours
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