Solve each equation. Write the missing quantity, the correct unit of measure, and the quantity being measured (speed, distance or time).
1. x=4 km/h * 3 hr
2. x=50m/10 m/s
3. x=70 mi/h *7 hr
4. x=25 km/50 s
5. x=576 mi/16 mi/h
6. x=40 m/3s * 12 s