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Lesson Check (4.0A.A.2)
1. Sari has 3 times as many pencil erasers as
Sam. Together, they have 28 erasers. How
many erasers does Sari have?​

Respuesta :

DeanR

Let x be how many erasers Sari has and y be for Sam's.

x = 3y

x + y = 28

y = 28 - x

x = 3(28 - x)

x = 84 - 3x

4x = 84

x = 21

Answer: Sari has 21 erasers

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