Christy donated $10 \%$ of his income to an orphanage and deposited $20 \%$ of the remainder in his bank. If he has now $Rs$ $7200$ left,what is his income?

In an examination,the percentage of students qualified to the number of students appeared from school $A$ is $70 \%$. In school $B$,the number of students appeared is $20 \%$ more than the students appeared from school $A$ and the number of students qualified from school $B$ is $50 \%$ more than the students qualified from school $A$. What is the percentage of students qualified to the number of students appeared from school $B$?

$A$ man wills $40 \%$ of his wealth to his wife and the rest to his children. What percentage of the wealth willed to the wife do the children get?

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

Ramola's monthly income is three times Ravina's monthly income. Ravina's monthly income is $15\%$ more than Ruchira's monthly income. Ruchira's monthly income is $₹ 32,000$. What is Ramola's annual income?

The price of a table depreciates every year by $20 \%$. If the value of the table after $2$ years is $Rs$ $32,000$,then what is the present price (in $Rs$) of the table (in $,000$)?