Add the three numbers together and divide by three. It is 7.33 recurring.
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Median of the set = arithmetic mean of 75 and 85 = 80
65, 70, 75, 80, 85.
C 65
65 multiplied by 85 is 5,525.
80 75 + 70 + 80 = 225 80 + 85 + 90 = 255 225 + 255 = 480 six numbers so 480 / 6 = 80