Thursday
May 23, 2013

Homework Help: math

Posted by Anonymous on Saturday, May 26, 2012 at 8:09pm.

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.

• math - MathMate, Sunday, May 27, 2012 at 7:10am

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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