we know that
Chad cycled [tex]62.3[/tex] miles in [tex]3.5[/tex] hours
so
by proportion
[tex]\frac{62.3}{3.5} \frac{miles}{hours} =\frac{x}{1} \frac{miles}{hour}\\ \\3.5*x=62.3\\ \\ x=62.3/3.5\\ \\x= 17.80\ miles[/tex]
therefore
the answer is
[tex]17.80\ miles[/tex]
