A car travels 70 miles in 11 hours. What is its average speed?
The average speed is 6.3636364 mph.
How to work it out
- 1
Write down what you know: distance d = 70 miles, time t = 11 hours. You are asked for the speed v.
- 2
Use the formula speed = distance ÷ time:
- 3
Answer with the unit: 6.3636364 mph.
- 4
The same formula rearranged: distance = speed × time (6.3636364 × 11 = 70 miles) and time = distance ÷ speed (70 ÷ 6.3636364 = 11 hours).
LaTeX source of the formulas on this page
\[ v = \frac{d}{t} = \frac{70}{11} = 6.3636364\ \text{mph} \]
\[ v = \frac{d}{t} = \frac{70}{11} = \frac{70}{11} = 6.3636364 \]How far at 6.3636364 mph
| Time | Distance |
|---|---|
| 0.5 hours | 3.1818182 miles |
| 1 hour | 6.3636364 miles |
| 2 hours | 12.727273 miles |
| 3 hours | 19.090909 miles |
| 4 hours | 25.454545 miles |
| 5 hours | 31.818182 miles |
Questions
What is the speed if a car travels 70 miles in 11 hours?
The average speed is 6.3636364 mph.
How far does it go in 3 hours at that speed?
19.090909 miles.