I played 4 games of badminton and scored an average of 12 points per game. The average score of the first 3 games was 10 points per game. How many points did I score in the 4th game?
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in 4 games total point=4×12=48
in 3 games=10×3=30
in 4th game=48-30=18
in 4 games total point=4×12=48
in 3 games=10×3=30
in 4th game=48-30=18
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