Good evening!

I have tried this several ways, and I keep getting the wrongs answers? Can you help and try to explain the answers?

Capstone Consolidated, Inc. is a leading manufacturer of steel products. The following inventory data relates to the firm's production during the first quarter of 2015:

Tons of Raw Purchase Date of Steel Price Total Purchase Purchased per Ton Cost Jan . 1 500 $ 20,000 Jan . 15 35 24.500 FED . ] EE 200 6. 500 Feb . 21 41507 30 13.500 March 15 350 42 14, 700 2, 200 $79, 300