time = distance/speed, so
walking time = 1/4 hr
bus time = (5-1)/16 = 1/4 hr
avg speed = distance/time = 5/(1/4 + 1/4) = 10 km/hr
Bisi lives 5km from school.she walks 1km at 4km/h and travels the rest of the way by bus at 16km/h.what is the average speed for the whole distance?
1 answer