hello
to solve this question easily, let's convert 3/4 to decimals
[tex]\frac{3}{4}=0.75[/tex]so, from the question, 18 miles can be convered in 3 hours i.e
[tex]18mi=3h[/tex]x miles will be convered in 0.75hr
[tex]x=0.75h[/tex]let's equate both equations and solve for x
[tex]\begin{gathered} 18mi=3h \\ x=0.75 \end{gathered}[/tex]cross multiply both sides and solve for x
[tex]\begin{gathered} x\times3=18\times0.75 \\ 3x=13.5 \\ \end{gathered}[/tex]divide both sides by coefficient of x
[tex]\begin{gathered} \frac{3x}{3}=\frac{13.5}{3} \\ x=4.5mi \end{gathered}[/tex]from the calculations above, 4.5 miles will be covered in 3/4 hours
the answer is option B
