mysql 5 queries

anyone can help i have the database and everything i just do not know to find the queries?

how to find the queries   

Exact details the management require: 

1. Cost of each patients stay in the hospital.

2. Total amount of patients in the hospital

3. Total cost of Medicines used by the hospital.

4. Total Consultant charges to date.

5. Show all Wards and how many nurses are assigned to each.