Linear Equation...

Three consecutive whole numbers are such that if they be divided by $5, 3$ and $4$ respectively; the sum of their quotients is $40$. Find the numbers.

A student was asked to divide a number by $6$ and add $12$ to the quotient. He, however, first added $12$ to the number and then divided it by $6$, getting $112$ as the answer. The correct answer should have been.

The sum of the digits of a two digit number is $6$  and its ten's digit is twice its unit digit. Find the number.

Separate $178$ into two parts so that the first part is $8$ less than twice the second part.

$28$ is $12$ less than $4$ times a number. Find the number.

The ten's digit of a two digit number is three times the unit digit. The sum of the number and the unit digit is $32$. Find the number. 

Twice a number is decreased by $15$, equals $25$. Find the number.

AB is a segment. The point P is on the perpendicular bisector of segment AB such that length of AP exceeds length of AB by $7$ cm. If the perimeter of $\Delta ABP$ is  $38$ cm. Find the sides of $\Delta ABP$ .

If Megha's age is increased by three times her age, the result is 60 years. Find her age. 

The sum of two consecutive odd natural numbers is $140$. Find the bigger number.