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A train crosses two bridges 370 m and 480 m long in 51 and 62 seconds respectively. Find the speed of the train.
a)24 kmph b)36 kmph c)45 kmph d)64 kmph
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A train of length 180 m travelling at 72 kmph overtook a motorcyclist travelling at 36 kmph at 4 p.m. At 5 p.m it overtook another cyclist travelling in the opposite direction at a speed of 18 kmph.When will the cyclist meet the motorcyclist?
a)1 hr 20 mins b)1 hr 30 min c)1 hr 45 min d)none of the above
A man started 15 minutes late and by travelling at a speed which is 5/4rth of his usual speed reached his office 20 mins early. What is the usual time of the journey?
a)85mins b)100 mins c)135 mins d)175 mins