Answer:
[tex]6\frac{3}{4}\ ft[/tex]
Step-by-step explanation:
we know that
To find out how long is Ms.Smith’s bulletin board, multiply Mrs . Porcelli’s bulletin board by 3
so
[tex]2\frac{1}{4}(3)[/tex]
but first convert mixed number to an improper fraction
so
[tex]2\frac{1}{4}\ ft=2+\frac{1}{4}=\frac{9}{4}\ ft[/tex]
substitute
[tex]\frac{9}{4}(3)=\frac{27}{4}\ ft[/tex]
convert to mixed number
[tex]\frac{27}{4}\ ft=\frac{24}{4}+\frac{3}{4}=6\frac{3}{4}\ ft[/tex]
