The selling price of item A as Rs. 1100.
How to solve
Let the cost price of item B be x.
Therefore, the cost price of item A is (x + 500).
When A is sold at a 10% loss, the selling price of A is 90% of (x + 500).
When B is sold at a 25% profit, the selling price of B is 125% of x.
Given that the overall transaction results in a 4% profit:
Total selling price = Cost price + 4% of the cost price.
Equating the selling prices of A and B with the total selling price:
(90% of (x + 500)) + (125% of x) = Cost price + 4% of the cost price.
Solving the equation gives the selling price of item A as Rs. 1100.