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 difference between two numbers is $1600$. If $7.5\%$ of one number is equal to $12.5\%$ of the other number,find the two numbers.

Twelve percent of Kaushal's monthly salary is equal to sixteen percent of Nandini's monthly salary. Suresh's monthly salary is half that of Nandini's monthly salary. If Suresh's annual salary is $Rs$ $1.08$ Lakhs,what is Kaushal's monthly salary?

In a certain school,$20 \%$ of students are below $8$ years of age. The number of students above $8$ years of age is $2/3$ of the number of students of $8$ years of age,which is $48$. What is the total number of students in the school?

Peter earned $40\%$ more money than Albert. Albert earned $20\%$ less than Michael. Peter earned more than Michael by: (in $\%$)

$A$ number,when $35$ is subtracted from it,reduces to its $80$ percent. What is four-fifths of that number?