A car travels 290 miles in 2 hours. What is its average speed?
The average speed is 145 mph.
How to work it out
- 1
Write down what you know: distance d = 290 miles, time t = 2 hours. You are asked for the speed v.
- 2
Use the formula speed = distance ÷ time:
- 3
Answer with the unit: 145 mph.
- 4
The same formula rearranged: distance = speed × time (145 × 2 = 290 miles) and time = distance ÷ speed (290 ÷ 145 = 2 hours).
LaTeX source of the formulas on this page
\[ v = \frac{d}{t} = \frac{290}{2} = 145\ \text{mph} \]
\[ v = \frac{d}{t} = \frac{290}{2} = 145 \]How far at 145 mph
| Time | Distance |
|---|---|
| 0.5 hours | 72.5 miles |
| 1 hour | 145 miles |
| 2 hours | 290 miles |
| 3 hours | 435 miles |
| 4 hours | 580 miles |
| 5 hours | 725 miles |
Questions
What is the speed if a car travels 290 miles in 2 hours?
The average speed is 145 mph.
How far does it go in 3 hours at that speed?
435 miles.