Bob roller skates 48 km in 4 hours. What is his average speed in kilometers per hour?
His average speed is
Remember the triangle of Speed, Distance and Time. If you remember it, you'll ace these kinda questions.
I had trouble with these formulas but the triangle helped me a LOT! Anyways, let's get back to the question. The formula for average speed is pretty much the same as the formula for just speed. The average speed formula is
I hope this explanation helps you!