Answer 1

\[\text { Given }, \]

\[\text { Amount paid by Swarna for a pair of shoes = Rs } . 250\]

\[\text { VAT paid by her = Rs }. 20\]

\[\text { Let the rate of VAT be x % } . \]

\[\text { Then }, \]

\[\text { x % of }250 = 20\]

\[\frac{x}{100} \times 250 = 20\]

\[2 . 5x = 20\]

\[x = 8\]

\[\text { Thus, Swarna paid 8 % VAT on the pair of shoes } .\]