The bus traveled 60 km at a speed of 40 km / h, making a stop for 30 minutes and then drove to the final

The bus traveled 60 km at a speed of 40 km / h, making a stop for 30 minutes and then drove to the final points 54 km / h. What is the average speed of the bus?

I traveled 60 kilometers in (60/40) = 1.5 hours, 54 kilometers traveled in 1 hour, so the total time that the bus spent on the trip (including the stop) will be (1.5 + 1 + 0.5) = 3 hours

The speed is calculated by the formula:

v = S / t, the total route of the bus was (60 + 54) = 114 km, therefore:

v = (60 + 54) / 3 = 38 km / h.

Answer: the average speed of the bus along the entire route was 38 km / h.