Input credit of 60% on gst paid tax @ 28% - reg

Dear shankar ji

any rule ref for the same , since it is under stood it is on entire 28% sold under intra state supply ie within state local 60% of the GST is allowed 

but as per you when my stock is under CST purchases ie closing stock 30.6.17 when i sell in July 17 it will be taxes at 28% output but 

ITC will be 60% on 28% will be input since iam a trader , is it correct a, please mention if you know the specific rule or notification on this 

tku CA shankarji

Pl refer the brochure for details:

https://www.cbec.gov.in/htdocs-cbec/gst/input-tax-credit-mechanism-onlineversion-07june2017.pdf

website not getting however understod like this.

Trader - only purchase invoice with VAT / CST rate charged in Pre GST ie before 1.7.17

Closing stock as on 30.6.17 declared under TRANS 2

Whenever stock are sold from Pre GST lot my rate of Tax @ 28% then i can avail deemed credit at 60% 0n 28% GST ie 16.80% as input so that i can reduce from my basic price this % to the market

Whenever stock are sold from Pre GST lot of goods purchases under TNVAT and my GST rate will be 28% then iam allowed at 40% ie 11.20% as input so that i can reduce 11.20% from the basic

is the under standing correct pl