Farlow Plc manufactures two products, Dip and Bip. It intends to produce 2,000 units of each product in the next year to meet the sales budget. Each Dip requires 2 kg of material Z and 1 kg of material Y and each Bip requires 3 kg of material Z and 4 kg of material Y. At present there are 200 kg of Z and 500 kg of Y in inventory. Farlow Plc intends to increase the inventory levels of these materials by the end of the year to 600 kg of Z and 800 kg of Y. Material Z costs 4 per kg and material Y costs 5 per kg.

What is the total materials purchases for the next year?