If a discount of 6% on the marked price of an item results in its selling price being Rs. 235, then at what price should the item be sold in order to allow a discount of 15%?

The item should be sold for Rs. 212.5 at a 15% discount.

A 6% discount leaves 94% of the marked price as selling price.

So 0.94 x MP = 235, giving MP = 235 / 0.94 = 250.

A 15% discount leaves 85% of the marked price.

SP = 0.85 x 250 = 212.5.