Adjustment of cst output with vat input

Please tell me whether cst output can be adjusted with input vat in delhi.

Suppose ,I have purchased goods on VAT @ 5% of 50000.Sold half good on vat @ 5% of 30000 and half on CST @ 2% of 30000..

so,       inputvat-outvat-cst output= vat payable

                 2500-1500-600=400