The mean of eight numbers is $-5$. Five of the numbers are $-10$, $3$, $8$, $-2$ and $9$

Question

The mean of eight numbers is $-5$. Five of the numbers are $-10$, $3$, $8$, $-2$ and $9$. The remaining three numbers are each equal to $t$. Find the sum of the $8$ numbers, the value of $t$.

Accepted Answer

(i) $-40$ (ii) $t=-16$

Finding an Unknown Number from a Given Mean

Finding an Unknown Number from a Given Mean

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