Question

Help with 12 please

Answer 1

12.

`we \: know \: that \\ (sum \: of \: all \: quantities)/(number \: of \: quantities) = mean \\ => (26 + 22 + 32 + 28 + 35 + x)/(6) = 30 \\ = > (143 + x)/(6) = 30 \\ = > 143 + x = 30 * 6 \\ = > 143 + x = 180 \\ = > x = 180 - 143 \\ = > x = 37 \\`

This is the answer.

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