Question

I drove 120 miles in 1 3/4 hours what's the speed of the truck in miles per hour

Answer 1

$\frac{120\ mi}{1\frac{3}{4}\ h}=\frac{120}{\frac{7}{4}}\ mi/h=\left(120\times\frac{4}{7}\right)\ mph=\frac{480}{7}\ mph=68\frac{4}{7}\ mph\approx68.5\ mph$