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Riya bought 2 pens and 3 pencils for Rs 18, while Amit bought 2 pens and 1 pencil for Rs 12 from the same shop.
Using elimination, find the cost of one pencil (in Rs).

Class 10Elimination MethodAlgebra — Systems of Equations
  • A3
  • B2
  • C4
  • D6

Step-by-Step Solution

Let pen = , pencil = and . Subtract: , so .
Answer: A) 3

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