Question

Use the fact that 1 mi ≈ 5/3 km and 1 km ≈ 3/5 mi.

a. What is a 30 miles per hour speed limit approximately equal to in kilometers per hour?
30 mi per hr = _____ km per hr

Answer 1

To convert the 30 mph speed limit to km/h, multiply 30 by 5/3, resulting in a speed limit of 50 km/h.

Step-by-step explanation:

To convert a speed limit from miles per hour to kilometers per hour, you can use the given conversion factor that 1 mile is approximately equal to 5/3 kilometers. So, to find what a 30 miles per hour speed limit is in kilometers per hour, you multiply 30 by 5/3:

30 mi/hr × (5/3) km/mi = 50 km/hr

Therefore, a speed limit of 30 miles per hour is equal to 50 kilometers per hour.