Easy -1.8 This is a straightforward algebraic manipulation of the coding formula Σ(x-50) = Σx - 50n, requiring only one step to solve for n. It tests basic understanding of summation notation with no conceptual difficulty or problem-solving required.
1 For \(n\) values of the variable \(x\), it is given that
$$\Sigma ( x - 50 ) = 144 \quad \text { and } \quad \Sigma x = 944 .$$
Find the value of \(n\).
1 For $n$ values of the variable $x$, it is given that
$$\Sigma ( x - 50 ) = 144 \quad \text { and } \quad \Sigma x = 944 .$$
Find the value of $n$.\\
\hfill \mbox{\textit{CAIE S1 2020 Q1 [3]}}