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

The average distance from the Sun to the Earth is approximately $150\times 10^6\text{km}$ ($150,000,000\text{km}$).
The speed of light is roughly $3\times 10^5\text{km/s}$ ($300,000\text{km/s}$).

Calculating the time taken:

$$\text{Time}=\frac{\text{Distance}}{\text{Speed}}=\frac{150,000,000}{300,000}=500\text{ seconds}$$

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

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