Two successive discount of 30% and 35% on a deal are equivalent to a single discount of :

Correct option is C

Given:
The successive discount are 30% and 35%.
Formula Used:
Successive discount = X + Y - $$\frac{XY}{100}$$​​
Where,
X = First discount
Y = Second discount
Solution:

Successive discount = X + Y - $$\frac{XY}{100}$$​​
X = 30%, Y = 35%
=> 30 + 35 - $$\frac{30 \times 35}{100}$$​​
=> 65-10.5 = 54.5%
∴ The single equivalent discount is 54.5%.