Question

In a shop there is a double discount of 10% and 20%
on an article having price of Rs 100. Calculate the total
discount.​

Answer 1

formula for succesive discount is

$x + y - xy \div 100 \%$

So, as the succesive discount is 10% and 20%

Let x be 10% & Let y be 20%

total discount= x + y - xy/100%

= [(10 + 20 - (10×20) / 100]%

= 30 - 200 / 100%

= 30 - 2%

= 28%

So, therefore the total discount is 28%