Respuesta :

Answer:

64 km/h

It is a simple ratio

15 mins / 16 km

to

60 mins / ? km

Divide 60 / 15 to get 4

16 times 4 = 64

Answer:

4km/hr

Explanation:

speed=distance÷time

total distance=8+3+5=16km

time in hours =15÷60=0.25hrs

speed=16÷0.25

speed=4km/hr