Successive discount of 10% and 20% are equivalent to a single discount of :
Successive discount of 10% and 20% are equivalent to a single discount of :
[A]12%
[B]28%
[C]30%
[D]15%
28%
Successive discount of x% and y% = %
∴ Required discount = %
%
Hence option [B] is the right answer.