The price of a washing machine, inclusive of Tax, is Rs. 13,530/-. If the tax is 10%, find its basic (cost) price.
Selling price of washing machine = Rs. 13,530.
Rate of Sales Tax = 10%
∴ Cost price = Selling Price×100(100+Rate of Sales Tax)
= 13530×100100+10
= 13530×100110=Rs.12,300