$45 \%$ of $750 - 25 \%$ of $480 = ?$

$6 \frac{2}{3} \%$ expressed as a fraction in its lowest term is:

An article is sold at a discount of $20 \%$ on the marked price. In order to gain $60 \%$ on the marked price,at how much more percent of the discounted price should it be sold?

When the price of an article is reduced by $15 \%$,the sales increase by $35 \%$. The percentage change in the total amount of receipts is:

The sum of two numbers is $\frac{23}{20}$ of the first number. The second number is what percent of the first?

The difference of two numbers is $20 \%$ of the larger number. If the smaller number is $20$,then the larger number is: