Mathematics

# If Dave drives at a steady speed of 50 miles per hour, how long will it take him to drive 10 miles? A: 12 minutes B: 10 minutes C: 15 minutes D: 30 minutes

$\begin{array}{ccc}50miles&-&1h=60min\\\\10miles&-&t\end{array}\\\\\\\\t=\frac{10\cdot60}{50}=12\ (min)\\\\Answer:A$