Let the production cost be Rs. 100
The, Selling Price = Rs. 120
Price of component A = Rs. 10
Price of component B = Rs. 20
Price of other components
=Rs.(100−10−20)=Rs.70After increase in prices,
Price of component A = Rs. 12
Price of component B = Rs. 28
Price of other components = Rs. 70
Total Cost of production
=Rs.(12+28+70)=Rs.110Selling price
=Rs.(1.15×120)=Rs.138Profit = Rs. 28
Profit %
=25.45%Hence, option B is the correct answer.