self Maths Puzzle

Every day a boy on his way to go school and meets a train in railway crossing. one day the boy was late by 25 mint and he mate the train 6 km before the railway crossing. if the speed of the boy is 12km/hr. find the speed of the train?

Read Solution (Total 2)

the speed of the train is 72kmph
11 years agoHelpfull: Yes(0) No(0)

let the speed of train be x
6/x+6/12=25 min = 5/12
therefore x = 71 km/hr
11 years agoHelpfull: Yes(0) No(0)

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