Question

Successive discounts of 20% and 10% are equivalent to a single discount of - 

1. 15%
2. 28%
3. 25%
4. 30%

Answer 1

Correct Answer - Option 2 : 28%

Given

Successive discounts of 20% and 10% are equivalent to a single discount of 

Concept used

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

Calculation

⇒ \(20 + 10 - \frac{{200}}{{100}}\% \)

⇒ 30 - 2 

∴ 28%