Question

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

Answer 1

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