Level 2
Janet and her two sisters shared the bill in a restaurant equally. If each of them paid $22 inclusive of a service charge of 10%, how much is the total service charge?
Level 2
Tesssa has $16 worth of coins. 12 of them are 50¢ coins and 5 of them are 20¢ coins. The rest are $1 coins. How many coins does Tesssa have altogether?