A retailer purchases a sewing machine at discount of 15% and sells it for Rs. 1955. In the bargain he makes a profit of 15%. How much is the discount which he got from the wholesale?

Let the marked price be Rs. x
Discount available by the retailer = 15% of Rs. x
∵ C.P. of the machine by the retailer = (x - 15% of x) = Rs. 17x / 20
So, 15% of 17x / 20 = 1955 - 17x / 20
⇒ 51x/400 + 17x/20 = 1955
or x = 2000
∴ Discount received by retailer = (15% of 2000) = Rs. 300