Answer:
80%
Explanation:
You have to find the rate for the bike so you divide 30 by 2 and you get 15. After you do that, you make a problem to find the percentage so you take x/100 and 12/15 then you take 12 times 100 and that gives you 1200 then you divide by 15 and get 80. So that means the answer is 80%