In an examination,$65 \%$ of students pass in History and $55 \%$ of students pass in Hindi. If $5 \%$ of students fail in both subjects,what is the percentage of students who passed in both subjects?

There is a ratio of $5:4$ between two numbers. If $40\%$ of the first number is $12$,then what would be $50\%$ of the second number?

The radius of a sphere is increased by $10 \%$. The surface area increases by

In a gram panchayat meeting,$1000$ people voted on a resolution with $10 \%$ of the votes being invalid. After some discussion,$1000$ people voted again. This time there were $20 \%$ invalid votes. The opponents were increased by $50 \%$ while the motion was now rejected by a majority,which is $300 \%$ more than it was formerly passed by. How many people voted against the resolution before the discussion?

The product of one-third of a number and $150 \%$ of another number is what percent of the product of the original numbers?

If an electricity bill is paid before the due date,one gets a reduction of $4 \%$ on the amount of the bill. By paying the bill before the due date,a person got a reduction of $₹ 13$. The amount of his electricity bill was: