Question

if mode is 15 and median is 12, then arithmetic mean is?? ​

Answer 1

Let the mean be x

3 median = mode + 2 mean

3 (12)  = 15 + 2(x)

36   =   15 + 2x

36-15 = 2x

21 = 2x

x = 21/2

x = 10.5