Answer:
1:9
Step-by-step explanation:
you divide both sides by the right number
for example the right number in this one is 5 so u divide 5 by it self and 5 by 45 to get your answer
12/16
If you divide 12 by 4 you get 3 and if you divide 16 by 4 you get 4 so that would be 3/4
1/3 of a lap per 1 minute, 3 minutes per lap
