Math

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Mr.Fox's fourth grade class of 20 students had an average of 72% on their last test. However, Rose's mark of 76% had been incorrectly recorded as 56 %. What was the correct class average for the test?

A) 82% B) 80% C)73% D) 62%

  • Math -

    20*.72 = 14.4
    (144+(.76-.56))/20 = .73
    so (C)

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