Math, asked by sajadpullat7, 2 months ago

The cost of 2 pens and 3 books are 40 rupees the cost of 2 pens and 5 books are 60 ruppes then what is the cost of a pen ? what is the cost for the book ?​

Answers

Answered by Biyon
1

Step-by-step explanation:

let the no.of pens be x

and that of books be y

then,

2x+3y=40------------(1)

2x+5y=60------------(2)

by elimination method,

2x+3y=40

-2x-5y= -60

———————

-2y = -20

y = -20/-2

y = 20/2

y = 10

substituting y in x

2x + 3*10=40

2x +30=40

2x = 40-30

2x = 10

x = 10/2

x = 5

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