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.

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
20
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?
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