The answer is [tex]12.[/tex]
To divide [tex]3[/tex] by a fraction[tex]( \frac{1}{4} ),[/tex] you can multiply [tex]3[/tex] by the fraction's reciprocal, [tex]( \frac{4}{1} ).[/tex]
[tex]3 \div \frac{1}{4} = 3 \times \frac{4}{1} [/tex]
[tex]4/1[/tex] is just [tex]4,[/tex] so in the end you get [tex]3 \times 4 = 12.[/tex]