Question

The mean of $16$ numbers is $48$. If each number is divided by $4$ and diminished by $3$, then the new mean is:

• A. $12$
• B. $48$
• C. $52$
• D. $9$

Answer 1

The correct option is D $9$

Mean of $16$ numbers $=$ $48$

If each number is divided by $4$ ,

Then mean of $16$ numbers $=$ $\frac{Originalmean}{4}$

$=$ $\frac{48}{4}=12$

Now , $3$ is diminished by every number

Mean is also diminished by $3$ $=$ $12$ $-$ $3$

$=$ $9$ Ans.