The perimeter of a triangle with sides $(2x + 3y)$, $(3x - y)$, and $(x + 2y)$ cm is

The perimeter of a triangle with sides $(2x + 3y)$, $(3x - y)$, and $(x + 2y)$ cm is
  1. $6x + 4y$ cm
  2. $6x - 4y$ cm
  3. $5x + 4y$ cm
  4. $6x + 6y$ cm

Solution

Perimeter = sum of sides = $(2x+3x+x) + (3y - y + 2y) = 6x + 4y$.

Asked in: IMO

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