Question

20% discount is offered on an item. By applying a promo code the customer wins 10% cash back. What is the effective discount?

A) 30.8 percent B) 30 percent C) 12 percent D) 28 percent

Answer 1

Answer:

b. 30 percent is the effective discount

Answer 2

Given :-

There is total 2 discount in the entire process.

Discount 1(D1) = 20%

Discount 2(D2) = 10%

Let:-

The marked price of an article is 100x

Applying first discount (D1) = 100x×20% = 20x

So :-

New marked price will be = 100x - 20x = 80x

Similarly, applying D2 on new marked price

= 80x × 10% = 8x

Now :-

Final price is 80x - 8x = 72x

Change in Initial and final marked price is = 100x -72x = 28x

Effective discount = (28x/100x)×100 = 28%

Hence :-

The required answer is 28% (Option D).