A horse gallops a distance of 10 kilometers in a time of 30 minutes. Its average speed is

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.

What organization and environment is described above?