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Compare the speed of two trains, one moving at the speed of 80 km...

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Question:
Compare the speed of two trains, one moving at the speed of 80 km/hr and the other at 10m/sec.

Option A):
30: 9
Option B):
20: 9
Option C):
40: 9
Option D):
None of these

Correct Answer is Option B):
20: 9

Explanation:
Solution:
80 km/hr means (80 x  5/18) m/sec
Required comparison is 80 x 5/18 : 10 or, 20 : 9

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