When Cost price is the same, a profit of 15% and loss of 5% will always give an overall profit.
Now we have to calculate the overall profit percentage :
15% profit = : 15100×2000 = ₹300
5% loss = 5100×2000 = ₹100
Total SP = (2000 + 300) + (2000 - 100) = ₹2300 + ₹1900 = ₹4200 (SP > CP)
Total CP = ₹2000 + ₹2000 = ₹4000
∴ Profit = ₹4200 - ₹4000 = ₹200
Profit Percentage = 2004000×100 = 5%