We must find the greatest common factor so we can see what is the biggest number we can divide both numbers into so find the factors 32=2 times 2 times 2 times 2 times 2 40=2 times 2 times 2 times 5 gcf=2 times 2 times 2=8 the answer is 8
... because you divide the time but the distance so for this question you divide 22.5 by 5 and that's your answer. do the same for every question! hope this helps.