[Originally posted in Discussions]

I got it right. I figured it out this way:

The panel is already some distance away from the sun. It then moves away from the sun by 2. So overall it is now 4 times away from the sun (as 2 times 2 = 4 because the solar panel [looked] twice from the sun already).

Now I know it is a total of 4 times away from the sun.

We from experience also know that the more we get away from the light, the less infared radiation we absorb by that factor we moved our distance by. It brings us o say that energy output from Sun is inversely proportional to distance. So it looks like:

energy = k / d

where k is constant and d is distance

I already know distance is 4, so its going to be:

1 / 4 done