Ram scored $30 \%$ marks and failed by $15$ marks. Aditya scored $40 \%$ marks and obtained $35$ marks more than those required to pass. What is the pass percentage (in $\%$)?

$34.5 \% \text{ of } 1800 + 12.4 \% \text{ of } 1500 = (?)^3 + 78$

$23 \%$ of $8040 + 42 \%$ of $545 = ? \%$ of $3000$

The population of a town increases by $5 \%$ annually. If its population in $2001$ was $138915$,what was it in $1998$?

The price of a table depreciates every year by $20 \%$. If the value of the table after $2$ years is $Rs$ $32,000$,then what is the present price (in $Rs$) of the table (in $,000$)?

About $8 \%$ of the voters in an election did not cast their votes. In this election,there were only two candidates. The winner,by obtaining $48 \%$ of the total votes,defeated his contestant by $1100$ votes. The total number of voters in the election was: