A car travels 460 miles in 4 hours. What is its average speed?
The average speed is 115 mph.
How to work it out
- 1
Write down what you know: distance d = 460 miles, time t = 4 hours. You are asked for the speed v.
- 2
Use the formula speed = distance ÷ time:
- 3
Answer with the unit: 115 mph.
- 4
The same formula rearranged: distance = speed × time (115 × 4 = 460 miles) and time = distance ÷ speed (460 ÷ 115 = 4 hours).
LaTeX source of the formulas on this page
\[ v = \frac{d}{t} = \frac{460}{4} = 115\ \text{mph} \]
\[ v = \frac{d}{t} = \frac{460}{4} = 115 \]How far at 115 mph
| Time | Distance |
|---|---|
| 0.5 hours | 57.5 miles |
| 1 hour | 115 miles |
| 2 hours | 230 miles |
| 3 hours | 345 miles |
| 4 hours | 460 miles |
| 5 hours | 575 miles |
Questions
What is the speed if a car travels 460 miles in 4 hours?
The average speed is 115 mph.
How far does it go in 3 hours at that speed?
345 miles.