At present,the ratio between the ages of Arun and Deepak is $4:3$. After $6$ years,Arun's age will be $26$ years. What is the age (in years) of Deepak at present?

$A$ sum of ₹ $15525$ is divided among Sunil,Anil and Jamil such that if ₹ $22$,₹ $35$ and ₹ $48$ be diminished from their shares respectively,their remaining sums shall be in the ratio $7: 10: 13$. What would have been the ratio of their sums if ₹ $16$,₹ $77$ and ₹ $37$ respectively were added to their original shares?

$A$ man spends $Rs. 2310$ on an average during the first $8$ months from his income. During the next $4$ months,he spends $Rs. 1800$ on an average from his income,but he had taken a loan of $Rs. 1680$ apart from his income to meet his expenses. If he spent all that he had,what is the ratio of his average income to his average expenditure?

In a school,there were $1554$ students and the ratio of the number of boys to girls was $4:3$. After a few days,$30$ girls joined the school but some boys left; as a result,the ratio of boys to girls became $7:6$. The number of boys who left the school is:

If $\left(x+\frac{1}{x}\right):\left(x-\frac{1}{x}\right)=5:5$,then the value$(s)$ of $x$ is/are:

If $a: b: c = 3: 4: 7,$ then the ratio $(a+b+c): c$ is equal to