1 10 15 28 Lester Company uses the perpetual inventory system and had the following purchases during May 2021: May (all purchases made on account) Purchase of 2,000 units at $2 each Purchase of 3,000 units at $3 each 20 Purchase of 4,000 units at $4 each And made the following sales at $30 per unit (all on account) May sold 4,000 units sold 3,000 units In addition to this you are given the following information to do specific identification costing method. May sold 1,500 units from the May 1"purchase 2,500 units from the May 10 purchase sold 500 units from May 1 purchase 500 units from May 10 purchase 2,000 units from May 20 purchase Required fill out the perpetual inventory costcards for FIFO, Weighted Average and Specific Identification. (5 marks for each) 15 28