$270$ candidates appeared for an examination,of which $252$ passed. The pass percentage is (in $\%$)?

What percent of $7.2 \,kg$ is $18 \,g$?

Shruti decided to donate $12 \%$ of her salary to an orphanage. On the day of donation,she changed her mind and donated $Rs. 3150$,which was $75 \%$ of what she had decided earlier. How much is Shruti's salary?

$A$ bag contains $600$ coins of $25$ paise and $1200$ coins of $50$ paise. If $12 \%$ of $25$ paise coins and $24 \%$ of $50$ paise coins are removed,the percentage of money removed from the bag is nearly: (in $\%$)

$A$ 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?

In a test,the minimum passing percentage for girls and boys is $35 \%$ and $40 \%$ respectively. $A$ boy scored $483$ marks and failed by $117$ marks. What are the minimum passing marks for girls?