Stock on 30th June

Mudit Jain (Student CA Final ) (10 Points)

01 July 2017  
There are two conditions: -

1. I am registered under vat only I have stock on which excise+cst is levied and now covered under 18%/28% rate can I avail credit of excise on cgst and the rate is 9%*60% I. E. 5.4%????

2. Same question but now excise + vat how much I can take credit??