the cost of 2 pencils and 3 erasers is rupees 9 and the cost of 4 pencils and 6 eraser is rupees 18. Find the cost of each pencil

1 thought on “the cost of 2 pencils and 3 erasers is rupees 9 and the cost of 4 pencils and 6 eraser is rupees 18. Find the cost of each pencil”

1. Answer:

   Let the cost of one pencil =Rs x

   and cost of one eraser =Rs y

   According to the question

   2x+3y=9 …(1)

   4x+6y=18

   ⇒2(2x+3y)=18

   ⇒2x+3y=9…(2)

   As we can see from Eq. (1) and (2)

   ⇒

   a1/a2=b1/b2=c1/c2

   ∴ Given pair of linear equations has indefinitely many solutions. mark it as branlist

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