Question

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

Answer 1

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)