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Trains Boats and Streams Practice Test 3 with solutions
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© examsnet.com
Question : 3
Total: 40
A man can row 4 km upstream in 2 hours and 2 km downstream in 20 minutes. How long will it take him to go 8 km in a stagnant water.
50 minutes
2 hours
1 hour 30 minutes
1 hour 54 minutes
None of these
Validate
Solution:
Downstream rate =
2
×
60
20
= 6 km/hour
Upstream rate =
4
2
= 2 km/hour
Rate of current =
6
−
2
2
= 2 km/hour
Speed of the boat = 6 - 2 = 4 km/hour
Time taken to cover 8 km in the still water =
8
4
= 2 hour
© examsnet.com
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