The light from the Sun reaches the Earth in about how much time?

Sunlight travels at the speed of light, which is approximately $3\times 10^8\text{m/s}$. Given the average distance between the Sun and the Earth is about $1.5\times 10^{11}\text{m}$:
$$\text{Time}=\frac{\text{Distance}}{\text{Speed}}=\frac{1.5\times 10^{11}}{3\times 10^8}=500\text{seconds}$$

Converting $500\text{seconds}$ into minutes and seconds gives:

$$\frac{500}{60}=8\text{minutes and }20\text{seconds}$$