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Trains Boats and Streams Practice Test 4 with solutions
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© examsnet.com
Question : 4
Total: 40
Find the distance between two places if a man can row at 15 km/hour in the still water and rate of current is 3 km/hour and the man takes 120 minutes to go and come back to the starting point.
12
14.4
12.5
17.14
13
1
3
Validate
Solution:
Downstream rate = 15 + 3 = 18 km/hour
Upstream rate = 15 - 3 = 12 km/hour
Let the distance between the two place = x
According to the question.
x
18
+
x
12
=
120
60
2
x
+
3
x
36
= 2
5
x
36
= 2
x =
2
×
36
5
= 14.4 km
© examsnet.com
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