Arun is a wholesaler and he fixed the MRP of his typewriters at 55% above its production cost. The typewriter was then dispatched to a retailer named Harish to be sold in the local market, who plans to gain 23% profit on his purchase price. If Harish gives 10% discount on MRP, then find the profit percentage for Arun who sells his product to Harish calculated to the nearest integer?

Using the method of assuming a base cost price, let Arun's production cost be 100, making the initial MRP 155. Harish sells at a 10% discount on this MRP, so his selling price is 139.5. The problem states Harish gains a 23% profit on his purchase price from Arun, meaning Arun's selling price to Harish is 139.5 divided by 1.23, which equals 113.41. Therefore, Arun's profit percentage is 13.41%, which rounds to 13%.

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