The colors you see during a sunset are caused by the refraction of light by the atmosphere the absorption of light by the atmosphere the reflection of light by the atmosphere

the refraction of light by the atmosphere

Explanation: Refraction is the phenomenon in which there is a change in direction of light passing from one medium to another or from a gradual change in the medium.

Here in case of sunset, the sun rays passes through the varying density of atmosphere because of varying concentrations of dust particles.

Reflection is the phenomenon in which the light bounces back after falling on a surface.

Absorption is the phenomenon in which matter captures the electromagnetic radiations and thus the energy of photons is converted to internal energy of the system.

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over