West Bengal Board Solutions for Chapter: Formation of an Equation and Its Solution, Exercise 5: Let's work out - 19

Divide $56$ into two parts, so that thrice of the first part becomes $48$ more than one third of the second part.

$\frac{1}{5}$ part of a pole lies in mud, $\frac{3}{5}$ part lies in water and in the remaining $5$ metres lies above the water. Let's find the length of the pole and write it.

At present my father's age is $7$ times of my age. After $10$ years my father's age will be three times of my age. Let's calculate and write the present age of my father and me.

My uncle changed a $1000$ rupee cheque from a bank in the form $5$ rupee and $10$ rupee notes. If he received $137$ notes in total then find the number of $5$ rupee notes that he got.

Salem uncle of our village used $\frac{1}{2}$ of this savings to buy a house after his retirement from a government job. One day after falling in trouble, he sold his house and got $5\%$ more than his cost price. If he had taken $₹3450$ more, then he would get $8\%$ more than his cost price. Let's find the amount of money Salem uncle used to buy his house, and his entire savings.

Write a mathematical story and form an equation.

$t=\frac{7}{8}$

Write a mathematical story and form an equation.

$x=24$

Write a mathematical story and form an equation.

$x=2$