Mathematics, 23.06.2021 18:30 skywil8981

Mark's average after 9 exams was 60. After 10 exams it had decreased to 50. How many marks did he score in his 10th exam?

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Mark's average after 9 exams was 60. After 10 exams it had decreased to 50. How many marks did he sc...

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Mark's average after 9 exams was 60. After 10 exams it had decreased to 50. How many marks did he score in his 10th exam? ​

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Mark's average after 9 exams was 60. After 10 exams it had decreased to 50. How many marks did he score in his 10th exam?