Find the single d

Let the CP of product is Rs.100

20% discount on CP = Rs.20

Then, Price would be = 100-20

=Rs.80

Now, 10% discount on current price = 10% of Rs.80

= Rs.8

Now, final Selling Price will be = Rs.80 – Rs.8

= Rs.72

Discount Percent =

= 28%

So, successive discount of 20% and 10% is 28%