In an examination,$34 \%$ of students failed in Mathematics and $42 \%$ failed in English. If $20 \%$ of the students failed in both the subjects,then the percentage of students who passed in both the subjects was:

The monthly income and monthly expenditure of a person were $₹ 13500$ and $₹ 9000$ respectively. In the next year,his income increased by $14 \%$ while his expenditure increased by $7 \%$. The percentage increase in his savings is: (in $\%$)

Water tax is increased by $20 \%$ but its consumption is decreased by $20 \%$. The increase or decrease in the expenditure is:

The monthly income of a person is $Rs. 5000$. If his income is increased by $30\%$,then what is his monthly income now?

Three sets of $40, 50,$ and $60$ students appeared for an examination,and the pass percentages were $100\%, 90\%,$ and $80\%,$ respectively. The pass percentage of the whole set is:

If $\frac{3}{5}$ of a number is $23$ more than $50 \%$ of the same number,then what will be $80 \%$ of the number?