A man travelling by bus finds that the bus crosses 35 electric poles in 1 minute and the distance between 2 poles is 50 metres. Find the speed of the bus.

A man travelling by bus finds that the bus crosses 35 electric poles in 1 minute and the distance between 2 poles is 50 metres. Find the speed of the bus.
1). 112 km/hr.
2). 102 km/hr.
3). 110 km/hr.
4). 120 km/hr.

⇒ Total distance between the first and 35^th pole = 50 × 34 = 1700 metre = (1700/1000) km = 1.7 km

⇒ Time taken = 1 minute = (1/60) hours

⇒ Speed = distance/time = 1.7/(1/60) = 102 km/hr

50*34*60/1000*1 km/h=102km/h

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