If an item's selling price is Rs.276 as a result of an 8% discount on its marked price, at what price should the item be sold to allow a discount of 13%?

The item should be sold at Rs.261.

An 8% discount leaves 92% of the marked price as 276.

Marked price = 276 / 0.92 = 300.

A 13% discount leaves 87% of 300.

300 x 0.87 = 261.

Selling price = marked price x (1 - discount).