If light tajes 8 minutes to travel from the sun to earth and over 4 hours to travel from the sun to the planet neptune, what is the distance from the sun to neptune

We know that
The distance from the sun to earth is equal to 1 AU
1 AU (Astronomical Unit) is equal to 150 million km

in this problem
by proportion
8 min/1 AU=240 min/x
8*x=240
x=30 AU

convert to km
30*150 million km> 4500 million km

the answer is
the distance from the sun to neptune is 30 AU (4500 million km)