Answer:
1) Percent of skateboards that are longboards is 18÷60 or 30%
2) Number needed for equivalent ratio is 30 longboards
Explanation:
1) Percentage= part divided by whole
18÷60 = 0.3
0.3 = 30%
2) Create a proportion, let x = # longboards needed for a equivalent ratio
(18÷60)=(x÷100)
x=30