Question

Rakesh purchase 15 pens and 20 pencils. He has to pay ₹190 for it . The sum of the cost of a pen and pencil is rs 11 . Obtain a pair of linear equation in two variable from the given data

Answer 1

Step-by-step explanation:

let cost of 1 pen = x

and cost of 1 pencil = y

given,

15x + 20y = 190 ----(1)

x + y = 11 ----(2)