If mean of $4$ numbers is $15$ and three numbers are $10, 14, 16$, the fourth is

If mean of $4$ numbers is $15$ and three numbers are $10, 14, 16$, the fourth is
  1. $20$
  2. $15$
  3. $10$
  4. $25$

Solution

Sum $= 60$. Fourth $= 60 - (10+14+16) = 60 - 40 = 20$.

Asked in: MH-SSC-9

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