Question

the cost 2 pencil and 3 book is rupees 9 and the cost of 4 pencil and 6 book is rupees 18 find the cost of each pencil and each book​

Answer 1

Step-by-step explanation:

The Pair of Linear Equation formed were

2x + 3y = 9 ---> 1

4x + 6y = 18 ----> 2

Express the Value of x in terms of y from eq (1)

2x + 3y = 9

x = \frac{9 - 3y }{2}x=

2

9−3y

Now Substitute the value of x in eq (2)

4x + 6y = 18

\frac{4(9 - 3y}{2} + 6y = 18

2

4(9−3y

+6y=18

18 - 6y + 6y = 18

18 = 18

Hence , there are many Common Solutions to the given Situation