Question

What single discount is equivalent to successive discounts of 10% and 20%?

Answer 1

`18%`

Explanation:

After an initial discount of `10%`
you would pay `90%` of the original price.

After a second `20%` discount
you would pay `80%` of the initially discounted price
or `80%` of `90%` of the original price.

`80/100xx90/100xx" original price" = 72/100" original price" or`72%# or the original price.

Paying `72%` of the original price implies a discount of `18%`