Marked price of the bag = \(Rs. 600\)
So, the Relative discount after successive discounts of 25% and 10% will be = \(25 + 10 - (\frac{25 \times 10}{100}) = 32.5\)%
The Sale price will be = \(600 - (\frac{32.5}{100} \times 600)\)
= \(600 - 195\)
= \(Rs. 405\)
The correct option is (C): Rs.405