Step 1 : Interpreting the problem.
The price includes VAT.
So, 8% VAT means that if the price without VAT is ₹ 100,
then price including VAT will be ₹ 108.
Step 2: Calculating the price before VAT.
When price including VAT is ₹108, original price = ₹100
When price including VAT is ₹5400, original price
=₹100108×5400
=₹5000
Therefore, the price of the hair-dryer before the addition of VAT was ₹5,000.