Ahaan can row his boat 45 km downstream
in 6 hours and 15 km upstream in 6 hours.
Find the speed of Ahaan's boat
in still water
and the speed of the flow of stream.
Answers
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Given:
Ahaan can row his boat 45 km downstream in 6 hours and 15 km upstream in 6 hours.
To find:
Find the speed of Ahaan's boat in still water and the speed of the flow of stream.
Solution:
From given, we have,
Ahaan can row his boat 45 km downstream in 6 hours and 15 km upstream in 6 hours.
Speed of Ahaan's boat in still water is given by,
1/2 × (45/6 + 15/6)
= 1/2 × (60/6)
= 1/2 × (10)
= 5 km/hr
Speed of stream is given by,
1/2 × (45/6 - 15/6)
= 1/2 × (30/6)
= 1/2 × (5)
= 5/2 km/hr
Therefore, the speed of Ahaan's boat in still water and the speed of the flow of stream are 5 km/hr and 5/2 km/hr.
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