A car travels 470 miles in 11 hours. What is its average speed?
The average speed is 42.727273 mph.
How to work it out
- 1
Write down what you know: distance d = 470 miles, time t = 11 hours. You are asked for the speed v.
- 2
Use the formula speed = distance ÷ time:
- 3
Answer with the unit: 42.727273 mph.
- 4
The same formula rearranged: distance = speed × time (42.727273 × 11 = 470 miles) and time = distance ÷ speed (470 ÷ 42.727273 = 11 hours).
LaTeX source of the formulas on this page
\[ v = \frac{d}{t} = \frac{470}{11} = 42.727273\ \text{mph} \]
\[ v = \frac{d}{t} = \frac{470}{11} = \frac{470}{11} = 42.727273 \]How far at 42.727273 mph
| Time | Distance |
|---|---|
| 0.5 hours | 21.363636 miles |
| 1 hour | 42.727273 miles |
| 2 hours | 85.454545 miles |
| 3 hours | 128.18182 miles |
| 4 hours | 170.90909 miles |
| 5 hours | 213.63636 miles |
Questions
What is the speed if a car travels 470 miles in 11 hours?
The average speed is 42.727273 mph.
How far does it go in 3 hours at that speed?
128.18182 miles.