Level 3
Adam has 140 stickers.
Adam has 10 more blue stickers than red ones.
Adam has 20 more red stickers than yellow ones.
Find the number of blue stickers.
Level 3
Adam has 140 stickers.
Adam has 10 more blue stickers than red ones.
Adam has 20 less yellow stickers than red ones.
How many red and blue stickers does Adam have?