A car travels 290 km in 2 hours. What is its average speed?

The average speed is 145 km/h.

v = \frac{d}{t} = \frac{290}{2} = 145\ \text{km/h}

How to work it out

1
Write down what you know: distance d = 290 km, time t = 2 hours. You are asked for the speed v.
2
Use the formula speed = distance ÷ time:
$v = \frac{d}{t} = \frac{290}{2} = 145$
3
Answer with the unit: 145 km/h.
4
The same formula rearranged: distance = speed × time (145 × 2 = 290 km) and time = distance ÷ speed (290 ÷ 145 = 2 hours).

LaTeX source of the formulas on this page

\[ v = \frac{d}{t} = \frac{290}{2} = 145\ \text{km/h} \]
\[ v = \frac{d}{t} = \frac{290}{2} = 145 \]

What is the speed if a car travels 290 km in 2 hours?

The average speed is 145 km/h.

How far does it go in 3 hours at that speed?

435 km.