Question

Successive discounts of 10% and 20% are equivalent to a single discount of:
(A) 30%
(B) 15%
(C) 28%
(D) 12%
گا​

Answer 1

Answer:

28%

Successive discount of x% and y% = 

$(x + y - \frac{x \times y}{100} )\%$

%

∴ Required discount = 30 - 2 % = 28 %