Lucky has 21 stickers. He pastes 3 stickers on each page of a sticker album. How many pages of the sticker album does he use?
A6
B8
C5
D7
Lucky has 21 stickers. He pastes 3 stickers on each page of a sticker album. How many pages of the sticker album does he use?
A6
B8
C5
D7