July 1st beginning purchase 10un.@120
July 5th purchase 60un@112
July 14th sale 40@
July 21st purchase 30@115
July 30th sale 28@

Calculate for FIFO, LIFO:

Answers:
FIFO: 3674, 3644, 7696, 7706
LIFO: 7706, 3664, 3674, 7696

I worked my way and got 7696 for FIFO and 7706 for LIFO... Is it correct?? Or not...
Thank you.

Yes, if they are asking for COGS.