Harjeet spends $50 \%$ of his monthly income on household items,$20 \%$ of his monthly income on buying clothes,$5 \%$ of his monthly income on medicines and the remaining amount of $Rs. 11250$ he saves. What is Harjeet's monthly income?

Two-fifths of one-third of three-seventh of a number is $15$. What is $40$ per cent of that number?

The monthly income and monthly expenditure of a person were $₹ 13500$ and $₹ 9000$ respectively. In the next year,his income increased by $14 \%$ while his expenditure increased by $7 \%$. The percentage increase in his savings is: (in $\%$)

Dinesh's monthly income is four times Suresh's monthly income. Suresh's monthly income is $20\%$ more than Jyoti's monthly income. Jyoti's monthly income is $₹ 22,000$. What is Dinesh's monthly 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 $B$?

Rama's expenditure and savings are in the ratio $3:2$. His income increases by $10\%$. His expenditure also increases by $12\%$. His savings increases by: (in $\%$)