Question

There is road beside river. Two friends started from a point A, moved to a school situated at another point B and then returned to A again. One of them moves on a motorcycle at a speed of 24km/hr, while the other sails on a boat at a speed of 20km/hr. If the river flows at the speed of 8km/hr, which of the two friends will return to point A first?(flow of the river is from point A to

Q: Answer-There is road beside river. Two friends started from a point A, moved to a school situated at a...

Clearly, the motorcyclist move both ways at a speed of 24kmhr. So, average speed of the motorcyclist 24kmhr The boat sail or moves downstream 20 8 28 kmhr Boat sail or moves upstream 20 ndash 8 12 kmhr So, average of the boat 2 times 28 times 12 28 12 67240 16.8 kmhr Since, the average speed of the motorcyclist is greater, he will return to A first.