Krishna and Callum are playing a game where they earn 10 points if they win any round. If they played eight matches and Krishna won 3/4 of the matches, what is the total number of points that Callum earned?
Krishna won 3/4 * 8 rounds = <<3/4*8=6>>6 rounds.
If they played eight rounds, Callum won 8 rounds - 6 rounds = <<8-6=2>>2 rounds
If a round earns one 10 points, Callum got 2 rounds * 10 points/round = <<2*10=20>>20 points.
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