In a two-digit number, the tens digit is twice the units digit. If the sum of its digits is $9$. Find the number.

The sum of the present ages of Ram and Shyam is $75$ years. Ten years ago, Ram's age was $4$ times the age of Shyam. Find the difference between their present ages (in years).

A road divider of certain length is painted one-sixth yellow, three-fifth black, and the remaining 28 m is painted white. Find the length of the divider.

 Mr Sumanth spends two-fifth of his salary on house rent and one-fourth on food. After spending 2000 on miscellaneous, if he could save an amount of 5000, then find his monthly income (in ).

In a two-digit number, the units digit is 3 more than the ten's digit. The sum of the digits is 18 less than the original number. Find the product of the digits. 

A number is added to two-third of itself, $1$ is subtracted from the sum and the result is divided by $12$. If the final result is $12$, then find the number.

The present age of $A$ is $4$ years less than twice the present age of $B. B\text{'}s$ present age is $6$ years more than twice his age $15$ years ago. Find the difference of their ages.

A mother said that, her age is one year less than thrice her daughter's age. The daughter is $9$ years less than the difference between their present ages. Find the sum of their ages (in years).

There are two numbers; the difference between them is equal to twice the smaller number. The sum of the two numbers is $68$. Find the product of the two numbers.