What is the speed of a train if it overtakes two persons who are walki – McqOptions

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1.	What is the speed of a train if it overtakes two persons who are walking in the same direction at the rate of a m/s and (a + 1) m/s and passes them completely in b seconds and (b + 1) seconds respectively?$?
A.	(a + b) m/s
B.	(a + b + 1) m/s
C.	(2a + 1) m/s
D.	(2a + 1)/2 m/s
Answer» C. (2a + 1) m/s

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