Level 2
Adam buys a sticker, a marble and a bead for $7.50.
The sticker costs $3.50 more than the marble.
The bead costs 3 times as much as the marble.
How much is 4 marbles and 3 stickers?
Level 3
Peter made 75 paper aeroplanes in four days. Each day after the first day, he made double the number paper aeroplanes than the day before. How many paper aeroplanes did he make on the first day?