please explain your answers! because i dont understand it

Required information Use the following information for the Quick Study below. (Algo) (8-10) [The following information applies to the questions displayed below.] A company reports the following beginning inventory and two purchases for the month of Jantuary. On January 26. the company selts 250 units. Ending inventory at January 31 totals 130 units QS 6-8A (Algo) Periodic: Inventory costing with FIFO LO P3 Assume the periodic inventory system is used. Determine the costs assigned to ending inventory when costs are assigned based o the FiFO method. (Round your per unit costs to 2 decimal places.) Periodic FIFO Assume the periodic inventory system is used. Determine the costs assigned to ending inventory when costs are assigned based of the LIFO method. (Round your per unit costs to 2 decimal places.) QS 6-10A (Algo) Periodic: Inventory costing with weighted average LO P3 Assume the periodic inventory system is used. Determine the costs assigned to ending inventory when costs are assigned based on the weighted average method. (Round per unit costs to 2 decimal places.)