the cost of 5 pencils and 7 pens is 50 rupees and 7 pencils and 5 pens is 46 rupees find the cost of one pencil and one pen graphically
Answers
Answered by
2
Answer: Let pencil be x and let pen be y
5x+7y=50
7x+5y=46
multiply first equation by 7
35x+49y = 350
multiply second equation by 5
35x+25y=230
solving them we get 24y=120 which gives y is 5 rupees
substituting in second equation we get x is 3 rupees
Hopefully thinking that this will help you
Please mark me as Brainliest
Similar questions