time = distance/speed, so it takes 1/6 + 3/30 = 4/15 hr
avg speed is 4km / (8/30 hr) = 120/8 = 15 km/hr
Dorcas lives 4km from school. She walks 1km at 6km /h and travels the rest of the way by bus at 30om/h
How many minutes does the whole journey take?
What is her average speed in km/h
1 answer
6 answers