Level 3
Sarah had 35 as much money as Tricia. Sarah had $40 less than Tricia. Sarah spent some money to buy a birthday present for her friend. In the end, she had 14 as much money as Tricia. How much did Sarah spend on the birthday present?
Level 3
Esther spent 12 of her money on some pies and 37 of her remaining money on 8 buns. Each bun cost thrice as much as a pie. How many pies did she buy?
Level 2
3 bowls of noodles and 1 plate of chicken rice cost $13. 4 bowls of noodles cost the same as 3 plates of chicken rice. How much does a bowl of noodles cost?