Question

the price of 2 note books and 5 pencils is 30 rupees and the price of 4 notebooks and 5 pencils is 50 rupees. find the cost of the note book and pencil? ​

Answer 1

Answer:

cost of notebooks is 10 rupees and pencil is 2 rupees

Answer 2

Step-by-step explanation:

Let,

prize of notebook = x

and, prize of pencil = y

so,the price of 2 note books and 5 pencils is 30 rupees

• 2x + 5y = 30. eqn(i)

and, the price of 4 notebooks and 5 pencils is 50 rupees.

therefore,

4x+5y = 50. eqn(ii)

by elimination in eqn (i)&(ii)

4x+5y = 50

2x+5y = 30

(-). (-). (-)

__________

2x. =. 20

x = 10

put x = 10 in eqn (ii)

4(10) + 5y = 50

5y = 50 - 40

5y = 10

y = 2

thefore,

cost of one nootbook = 10

and,

cost of one pencil = 2