Question

Find the missing number.

$\begin{array}{ccccc}\text{X}& \text{9}& \text{12}& & \text{18}\\ \text{Y}& \text{6}& \text{8}& \text{16}& \text{12}\end{array}$

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Answer 1

Observing the table,

Let the missing number be x

$\frac{9}{6}=\frac{12}{8}=\frac{x}{10}=\frac{3}{2}$

Therefore x = 15