Two trains running in opposite directions cross a pole in 30 seconds a – McqOptions

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1.	Two trains running in opposite directions cross a pole in 30 seconds and 20 seconds respectively. They cross each other in 25 seconds. The ratio of their speed is …….
A.	1 ∶ 1
B.	1 ∶ 7
C.	1 ∶ 5
D.	1 ∶ 2
Answer» B. 1 ∶ 7

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