Level 3
Adam pays $1600 for a TV set, a mobile phone and a computer.
The TV set costs 3 times as much as the computer.
The mobile phone costs $500 less than the TV set.
How much is the mobile phone?
Level 3
Adam has 130 stickers.
Adam has 10 more blue stickers than red ones.
Adam has 20 more yellow stickers than blue ones.
Find the number of red stickers.
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?