Question

You ride your bike for 1.5 h at an average velocity of 8 km/h, then for 30 min at 19 km/h. what is your average velocity?

Answer 1

1.5 hour = 90 min
time = 90 min+ 30 min = 120 min = 2 hours
average velocity is
(8 km/h + 19 km/h)/2h = 13.5 km/h