Swatantrata Express and Samvidhaan express were running on parallel tracks in opposite direction. They cross each other in 60 seconds. However moving ahead, they cross stationary poles in 70 sec and 55 sec. respectively. What is the respective ratio of their speed?

Swatantrata Express and Samvidhaan express were running on parallel tracks in opposite direction. They cross each other in 60 seconds. However moving ahead, they cross stationary poles in 70 sec and 55 sec. respectively. What is the respective ratio of their speed?
1). 2 ∶ 1
2). 1 ∶ 2
3). 55 ∶ 70
4). 14 ∶ 11

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