A grocery store needs to schedule at least 20 cashiers and baggers combined, but only up to 15 cashiers and at most 10 baggers.

If it costs $12 per hour per cashier and $10 per hour per bagger, what combination of cashiers and baggers would minimize the store's cost?

If the store increases profit by $100 per hour per cashier scheduled and $80 per hour per bagger scheduled, what combination of baggers and cashiers would maximize the store's profit?

How do I solve this