Level 3
Olivia bought 3 home theater systems and 6 toasters. Each home theater system costs $280 more than each toaster. She spent 20% of her money on the toasters.
Level 3
Erika spent 38 of her money on 6 notebooks and 10 post-it pads. The cost of one post-it pad was thrice the cost of one notebook. She bought some more post-it pads with 14 of her remaining money. How many post-it pads did Erika buy altogether?
Level 3
Daniel's age is 19 of his uncle's. His uncle will be 41 years old in 5 years' time. In how many years' time will Daniel's age be 37 of his uncle's?