An orange has about 1/4-cup of juice. How many oranges are needed to make 2-1/2-cups of juice? Which equations represent this question?

? x 1/4 = 2-1/2
1/4 ÷ 2-1/2 = ?
? x 2-1/4 = 1/4
2-1/2 ÷ 1/4 = ?