Level 3 Caden bought 4 staplers and 3 notebooks for $42. One stapler cost 8 times as much as one notebook. Find the total cost of 2 staplers and 8 notebooks.
Level 3
Rebecca spent $18 on a plate, a bowl and 2 cups. Each plate cost $3 more than a cup and each bowl cost $2 more than a plate. Find the cost of a dozen cups .
Level 2
Amelia won $3888 in a lucky draw. She shared her winnings with her two parents. Each of her parents received 4 times as much money as Amelia. How much money did Amelia keep for herself?