Train a travelling at 60km/hr leaves mumbai for delhi at 6 p.M. Train b travelling at 90 km/hr also leaves mumbai for delhi at 9 p.M. Train c leaves delhi for mumbai at 9pm..If all the trains meet at the same time between mumbai and delhi, what is the speed of train c if the distance between delhi and mumbai is 1260 kms
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90 km/hr because train b also leaves at same time so
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