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the simple average of 15 30 40 and 45 is
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The simple average of 15 , 30 , 40 , and 45 is
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Answer to a math question The simple average of 15 , 30 , 40 , and 45 is
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$\frac{ 130 }{ 4 }$
$\begin{align*}&\frac{ 65 }{ 2 } \\&\begin{array} { l }32 \frac{ 1 }{ 2 },& 32.5\end{array}\end{align*}$
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Find the rule that connects the first number to the second number of each pair. Apply the rule to find the missing number in the third pair. (18 is to 22) (54 is to 26) (9 is to ?)
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