Determine the percentile rank of 64, 48.5 and 32 from the fol- lowing distribution. Class-Interval Frequency 74.5-79.5 69.5-74.5 64.5-69.5 59.5-64.5 4 5 3 6 54.5-59.5 10 49.5-54.5 44.5-49.5 7 39.5-44.5 4 34.5-39.5 6 29.5-34.5 10 24.5-29.5 5

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