Please answer the following question

1. Calculate the sale price of an item with a list price of $44.20 after a 25% trade discount
2. A supplier bought merchandise from a manufacturer with a list price of $2250. The supplier was given a series of discounts of 10%, 8% and 6%. What was the final price they paid?
3. A $50 item underwent discounts of 30% and 15% respectively. What was the equivalent rate of discount?
4. 1 USD is the equivalent of 1.25 CAD. How much is 1 CAD worth in USD?
5. A hospital with 300 beds uses 42 doctors, 52 nurses and 112 support staff. They are opening a new wing with 125 beds. Assuming the same ratios, how many doctors, nurses and support staff do they need?