The inventory method which results in the highest gross profit for June is 501
Solution:
Given,
Number of units purchased - Total cost
June 1 - 170 units - $ 350
June 10 - 190 units - 575
June 15 - 190 units - 640
June 28 - 200 units - 520
= $350 + [($575 ÷ 190 ) × (220 − 170 )]
= 350 + ( 3.02 x 50 )
= 501