Three successive discount of 12%, 13% and 11% are equivalent to an approximate single discount of:

Answer: Option A

Equivalent discount of (12%, 13%, 11%) = ?
Equivalent discount of (12% and 11%)
= 12 + 11 - $$\frac{12\times 11}{100}$$
= 23 - 1.32
= 21.68%
Equivalent discount of (21.68% and 11%)
= 21.68 + 11 - $$\frac{21.68\times 11}{100}$$
= 32%