help with homework please

Ram Ray's firm has developed the following supply, demand, cost, and inventory data Period 1 2 3 Regular Time 40 30 30 Supply Available Demand Overtime Subcontract Forecast 15 40 15 5 55 20 5 50 Initial inventory 20 units Regular-time cost per unit $100 Overtime cost per unit $150 Subcontract cost per unit $200 Carrying cost per unit per month $2 Assume that the initial inventory has no holding cost in the first period and backorders are not permitted Allocating production capacity to meet demand at a minimum cost using the transportation method, the total cost is $ fenter your response as a whole number). Enter your answer in the answer box