Two stations A and B are 660km apart. A train T1, which stops for 7 minutes in every town stations and for 3 minutes in every village-station, started from A with a speed of 40 km/hr towards B and at the same time a train T2 with a speed of 60 km/hr, which does not stop in any intermediate station, started from B towards A. They met at C, which is 420 km away from B.
If the number of town-stations between A and C is less than the number of village stations, then at least how many stations – town or village – are there between A and C? Assume that T1 stops only at town or village – stations.
a. 10
b. 16
c. 20
d. 13
distance between A & c is 240km & B & C is 420km
so T2 take 7 hr
T1 also take 7hr for 240 km but T1 speed is40 so it takes only 6 hr
so 1 hr is stoppagetime
13 villagestation =39 m in
3 town station=21 min
total 60min=16 station
Little Star
n/a
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