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Trains Boats and Streams Practice Test 2 with solutions
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© examsnet.com
Question : 2
Total: 40
There is a road beside a river. Two friends started from a place A, moved to a temple situated at another place B and then returned to A again. One of them moves on a cycle at a speed of 12 km/hr, while other sails on a boat at the speed of 10km/hr. If the river flows at the speed of 4 km/hr, then which of the two friends will return to place A first?
Cyclist
Boat sailor
Both in same time
None of these
Validate
Solution:
Downstream speed = 10 + 4 = 14 km/hr.
Upstream speed = 10 – 4 = 6 km/hr.
Hence, their average speed =
x
+
x
x
14
+
x
6
=
2
x
5
x
21
=
42
5
= 8.4 km/hr
Since, average speed of cyclist (12 km/hr) > average speed of boat sailor (8.4 km/hr).
Therefore, the cyclist will return to A first.
© examsnet.com
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