Printed price of dress = Rs. 1000
Rate of discount = 5%
∴ Amount of discount = 5% of printed price
= (5/100) × 1000 = Rs.50
∴ Taxable value = Printed price – discount
= 1000 – 50
= Rs.950
Rate of GST = 5%
∴ GST = 5% of taxable value
= (5/100)× 950
∴ GST = Rs.47.5
Purchase price of the dress
= Taxable value + GST
= 950 + 47.5 = Rs.997.50
∴ Purchase price of the dress for the customer is Rs.997.50.