Answer
$\frac{3}{80}$
Work Step by Step
$\frac{9}{20} \div 12 = \frac{9}{20} \times \frac{1}{12} = \frac{9*1}{20*12} = \frac{3 * 3}{2 * 2 * 2 * 2 * 3 * 5} = \frac{3}{2 * 2 * 2 * 2 * 5} \times \frac{3}{3} = \frac{3}{80}$
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