In an election between two candidates,one got $52 \%$ of the total valid votes. $25 \%$ of the total votes were invalid. The total number of votes were $8400$. How many valid votes did the other person get?

$A$ $20 \%$ raise of price followed by a discount of $25 \%$ on the raised price will:

$A$ businessman imported laptops worth $Rs$ $210,000$,mobile phones worth $Rs$ $100,000$,and television sets worth $Rs$ $150,000$. He had to pay $10\%$ duty on laptops,$8\%$ on phones,and $5\%$ on television sets. How much total duty (in Rupees) did he have to pay on all items as per the above details?

Rama's expenditure and savings are in the ratio $3:2$. His income increases by $10\%$. His expenditure also increases by $12\%$. His savings increases by: (in $\%$)

Rajesh spent $Rs. 44620$ on Deepawali shopping,$Rs. 32764$ on buying a computer,and the remaining $32\%$ of the total amount he had as cash with him. What was the total amount?

The salary of a person was reduced by $10 \%$. By what percent should his reduced salary be raised so as to bring it at par with his original salary (in $\%$)?