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Lois has 36 colored pencils. They are either red or green. For every green pencil, Lois has 3 red pencils. How many red enclosure does Lois have?

Respuesta :

Step-by-step explanation:

   The ratio of green to red is 1:3 which is the same as x to 3x where x is # of green pencils and 3x is # of red pencils. ---- Equation: x + 3x = 36 4x = 36 x = 9 (# of green pencils) 3x = 3*27 (# of red pencils)

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