1. If it takes 4 hours to drive a distance of 180 kilometers, calculate its speed.
2. A train travels with a constant speed of 40 miles per hour. How long will it take
to travel a distance of 40 miles?
3. An airplane flies with a constant speed of 800 km per hour: How far can it travel
in 3.1/2 hours?

4. Elmer rides on his bike with a speed of 6 kilometers per hour. How long will he
take to travel a distance of 15 kilometers,
5. A boy walks a distance of 8 kilometers in 2 hours. Calculate his speed.

with solution please.​