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Let red pens be r.
blue pens is 38 - r
Thus
6r + 4(38 - r) = 192
6r + 152 - 4r = 192
2r = 40, r = 20
red pens = 20,
blue pens = 18.
johnmulu answered the question on June 8, 2017 at 12:26
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