The population of a town is $123,456,789$. It increases by $10\%$ during the first year,$20\%$ during the second year,and $30\%$ during the third year. What is the average percentage increase during the three years?

Due to an increase of $30 \%$ in the price of eggs,$3$ eggs less are available for $₹ 7.80$. The present rate of eggs per dozen is:

For admission in a postgraduate program of Calcutta University,$90 \%$ of the candidates who appeared for the written test were males and the rest were females. $60 \%$ of the males and $80 \%$ of the females passed the written test. What is the total number of students who appeared for the written test,if the total number of passed candidates was $1240$?

Sixty-five percent of a number is $21$ less than four-fifth of that number. What is the number?

If $35 \%$ of a number is $12$ less than $50 \%$ of that number,then the number is:

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