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1 February, 03:23

Comparison: Sara has three times as many pencil erasers as Sam together they have 28 erasers how many erasers does Sara have

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Answers (2)
  1. 1 February, 03:58
    0
    You can do this problem algebraically by assigning variables. If Sara has 3 times Sam we can say Sam is x and Sara is 3x and together they have 28.

    Which looks like

    3x + x = 28

    4x = 28 (divide both side by 4)

    x = 7

    So Sara have 3x which after substitution or replacement looks like this

    3 x 7 = 21.

    So Sara have 21 pencil eraser.
  2. 1 February, 04:42
    0
    Sara has 21

    Sam has 7

    7x3 = 21 + sams 7 = 28
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