If $x$ is $90 \%$ of $y,$ then what per cent of $x$ is $y$?

$A$ man loses $20 \%$ of his money. After spending $25 \%$ of the remainder,he has $Rs. 480$ left. What is the amount of money he originally had?

$A$ number,when $35$ is subtracted from it,reduces to its $80$ percent. What is four-fifths of that number?

To attract more visitors,the zoo authority announces a $20 \%$ discount on every ticket,which costs $25 \ p$. For this reason,the sale of tickets increases by $28 \%$. Find the percentage of increase in the number of visitors.

Mukesh has twice as much money as Soham. Soham has $50 \%$ more money than Pankaj. If the average money with them is ₹ $110$,then Mukesh has:

If $60 \%$ of $A = 30 \%$ of $B$,$B = 40 \%$ of $C$ and $C = x \%$ of $A$,then the value of $x$ is: