How is $\frac{1}{2}\%$ expressed as a decimal fraction?

$\mathrm{x}\%$ of x is the same as $10\%$ of?

p is $6$ times as large as q. Then q is how many percent less than p?

The time duration of $1$ hour $45$ minutes is what percentage of a day?

The difference between $40\%$ of a number and $28\%$ of the same number is $198$. What is $64\%$ of that number?

One-fourth of $60\%$ of a number is equal to two-fifth of $20\%$ of another number. What is the respective ratio of the first number to the second number?

The salaries of A, B, and C are in the ratio $1 : 3 : 4$. If the salaries are increased by, $5\%, 10\%$ and $15\%$ respectively, then the increased salaries will be in the ratio.

The cost of an article was $₹ 75$. The cost was first increased by $20\%$ and later on it was reduced by $20\%$. The present cost of the article is :

If the numerator of a fraction is increased by $300\%$ and its denominator is increased by $150\%$, the resultant fraction is $\frac{3}{5}$. What is the original fraction?