Question

the cost of 3 pens and 5 pencil boxes is rs 120 amd that of 4 pens and 7 pencil boxes is 250 represent the situation in algebraicallly​

Answer 1

Let the cost of pen be x and pen be y

3x+5y=120 ...(1)

4x−5y=250 ...(2)

Answer 2

Step-by-step explanation:

lets the pen value be x and pencil box be y

cost of pens = 3x

cost of pencil box = 5y

1.  3x + 5y = 120

2.  4x + 7y = 250