CAN SOMEONE CORRECT ME THIS TASK ?

I LEAVE THE PROFESSOR COMMENTS ABOUT EACH EXERCISE AT THE BOTTOM. I NEED TO GET PERFECT IN THIS TASK PLEASE !!

Ejercicio 1. Costo de los bienes vendidos Musica y mas (FIFO) DATE PARTICULAR INVENTORY COST OF GOODS SOLD QTY UNIT COST TOTAL QTY UNIT COST TOTAL 1-May BEG INVENTORY 6-May SALE 91 1,365 6 91 546 546 FROM BEG. BAL 8-May 819 PURCHASE 15 95 1,425 1,425 2,244 13-May SALE 4 91 364 91 364 FROM BEG. BAL 20 1,880 30-May SALE 5T 91 455 91 455 FROM BEG BAL TOTAL 15 1,425 TOTAL COST OF GOODS SOLD 1365 TOTAL ENDING INVENTIRY 1,425 Ejercicio 2. Registro de inventario perpetuo Equipos electronicos y mucho mas (LIFO DATE PARTICULAR INVENTORY COST OF GOODS SOLD QTY UNIT COST TOTAL QTY UNIT COST TOTAL 1-May BEG INVENTORY 1,875 SALE 15 125 6-May 5 91 455 5 110 550 FROM MAY 8 PURCHASE 10 8-May .,325 PURCHASE 10 110 1,100 10 110 1,100 20 13-May SALE 2,425 4 91 364 4 110 440 FROM MAY 8 PURCHASE 16 1,985 30-May SALE 2 91 182 110 TOTA 110 FROM MAY 8 PURCHASE 125 25 FROM BEG BAL 1,750 TOTAL COST OF GOODS SOLD 1,225 TOTAL ENDING INVENTORY 1,750 Ejercicio 3. Registro de inventario perpetuo Musica y mas (AVERAGE DATE PARTICULAR INVENTORY COST OF GOODS SOLD QTY UNIT COST TOTA QTY UNIT COST TOTAL 1-May BEG. INVENTORY 6-May SALE 320 5 82 82 410 82 410 82 8-May 410 PURCHASE 15 83 1,245 15 83 1,245 20 82.75 13-May 1,655 SALE 3 82.75 248.25 82.75 248.25 17 30-May 1,406.75 SALE 6 32.75 496.5 82.75 496.5 TOTAL 11 910 TOTAL COST OF GOODS SOLD 1,154.75 TOTAL ENDING INVENTORY 910.25