A single discount equivalent to a discount series of 20%, 10% and 25% is
- 55%
- 54%
- 46%
- 42%
- 50%
If 3 succesive discounts are a%, b% and c%
then single discount
= a + b + c – (\(ab \over 100 \) + \(bc \over 100\) + \(ca \over 100 \) – \(abc \over 10000 \))
a = 20,
b = 10,
c = 25,
solving we get, 46%.