A train travelling at 72 km/hr. crosses a platform of 160 m in 18 second and another train travelling at 90 km/hr crosses the same platform in 15 second. Find the length of both the trains?
Speed of 1st train =72×5/18
= 20 m/s
∴ Dist travelled by 1st train = 20 × 18
= 360 m
∴ length of train (1st) = 360 – 160 = 200 m
Speed of 2nd train =90×5/18
= 25 m/s
∴ Distance travelled = 25 × 15
= 375 m
∴ length of 2nd train =375-160
= 215 m
required answer = 215 + 200 = 415 m
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