Question

the price of 5 pens and 4 pencil is rs 70,the price of 3 pens and 7 pens is 65 rs .find the price of one pen and pencil

Answer 1

Step-by-step explanation:

Bhut time lga h yarrr

PLZZ MARK AS BRAINLEIST

Answer 2

Let pencil be y and let pen be x

5x+4y=70

3x+7y=65

Multiply the first equation by 3

15x+12y=210

Multiply the second equation by 5

15x+35y=325

solving them we get

23y=115

y=115/23

y=5

which gives y is 5 rupees

substituting in the second equation we get

X= 10 rupees

therefore, cost of one pen is 10 rupees and cost of one pencil is 5 rupees