The ratio of the numbers of boys and girls of a school with $504$ students is $13: 11$. What will be the new ratio if $12$ more girls are admitted?

If $1,000$ copies of a book of $25$ sheets require $50$ reams of paper,how much paper is required for $5,000$ copies of a book of $32$ sheets?

Salaries of Ravi and Sumit are in the ratio $2:3$. If the salary of each is increased by $₹4000$,the new ratio becomes $40:57$. What is Sumit's present salary (in $₹$)?

The prices of a scooter and a television set are in the ratio of $3:2$. If a scooter costs ₹ $600$ more than the television set,then the price of the television set is (in ₹):

$x$ varies inversely as the square of $y$. Given that $y=2$ when $x=1$. The value of $x$ when $y=6$ will be equal to:

The total of the daily wages of Ram,Shyam and Mohan is $Rs. 450$. If they,respectively,spend $25 \%$,$20 \%$ and $50 \%$ of their incomes,then the ratio of their savings becomes $9:8:4$. What is the income of Ram?