Two successive discounts of 8% and 12% are equal to a single discount of:
Two successive discounts of $$x$$ and $$y$$ $$\equiv x+y-\frac{xy}{100}$$
= $$12+8-\frac{12\times8}{100}$$
= $$20-0.96=19.04\%$$
=> Ans - (B)
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