PLEASE HELP ME I WILL GIVE GOOD RATING

1) Encik Shah is the owner of Myteen Sdn.Bhd. The financial year end of the business is on 31 December annually. You are required to determine the Gross profits using :

(a) the FIFO,

(b) the LIFO and

(c) the average methods

The units of an item available for sale and purchase during March 2021 were as follows:

2 Mar	No Opening Balance
6 Mar	Purchase	70 units at RM675
8 Mar	Sales	50 units at RM800
16 Mar	Purchase	90 units at RM650
30 Mar	Sales	50 units at RM860

2) Why the weighted average cost methods gross profits is more than the FIFO method?