# Earth and Sun

Earth is 150 million km away from the Sun, 300,000 km of sunlight travels in 1 second. How long will the light come from the Sun to the Earth?

Correct result:

t =  8.333 min

#### Solution:

$s=150 \cdot \ 1000000=150000000 \ \text{km} \ \\ v=300000 \ \text{km/s} \ \\ t_{1}=s/v=150000000/300000=500 \ \text{s} \ \\ t=t_{1} / 60=500 / 60=\dfrac{ 25 }{ 3 }=8.333 \ \text{min}$

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