Question

A bus travelling at an average speed of 63km/h left a station at 8.15 a.m. A car later left the same station at 9.00 a.m. and caught up with the bus 10.45 a.m. find the average speed of the car.
A bus travelling at an average speed of 63km/h left a station at 8.15 a.m. A car later left the same station at 9.00 a.m. and caught up with the bus 10.45 a.m. find the average speed of the car.

When the two vehicles met, the bus had travelled 63km/h*2.5h=157.5 km, while the car had travelled 1.75 h.

The speed of the car is therefore
157.5km/1.75h=90 km/h.
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