Mathematics, 27.05.2021 23:00, onlymyworld27

Sally's math grade average went from an 84 to a 98. What was the percent of increase in her grade average? A. 14% B. 14 2/7% C. 16 2/3% D. 22%
Please answer with clear explanation not just the answer please

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Sally's math grade average went from an 84 to a 98. What was the percent of increase in her grade av...