i. Rate of CGST = 14%
But, Rate of SGST = Rate of CGST
∴ Rate of SGST = 14%
ii. Rate of GST on AC
= Rate of SGST + Rate of CGST
= 14% + 14% = 28%
∴ Rate of GST on AC is 28%.
iii. Let the cost (Taxable value) of AC be Rs. 100.
Given, GST = 28%
∴ The cost of AC with GST is Rs. 128.
For the total value of Rs. 128, the taxable value is Rs. 100.
For the total value of Rs. 51200, let the taxable value be Rs. x

∴ Taxable value of AC is Rs. 40,000.
iv. Total amount of GST = 28% of taxable value
= 28/100 × 40000
= Rs. 11,200
∴ Total amount of GST is Rs. 11,200.
∴ Amount of CGST is Rs. 5600.

vi. Amount of SGST = Amount of CGST
= Rs. 5600
Amount of SGST is Rs. 5600.