Question

The series of $30$%, $20$% and $10$% is equivalent to a single discount$=........$

• A. $49.6$%
• B. $50$%
• C. $51.6$%
• D. $50.4$%

Answer 1

The correct option is A $49.6$%

$100\times \left(\frac{70}{100}\right)\times \left(\frac{80}{100}\right)\times \left(\frac{90}{100}\right)=\frac{7\times 8\times 9}{10}=\frac{7\times 72}{10}=50.4$
$100-50.4=49.6$