If Darius scored 10 points, then Marius scored 10 + 3 = <<10+3=13>>13 points in total.
Darius scored 5 points less than Matt, so Matt scored 10 + 5 = <<10+5=15>>15 points in total.
So all three friends gathered 13 + 15 + 10 = <<13+15+10=38>>38 points.
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