Needing some help/understanding on this:

Scientists have discovered a galaxy at a distance of 600 billion kilometers from Earth. What is the distance, in AU, between the galaxy and Earth?

400 AU

600 AU

4000 AU

6000 AU

I think it's A or C, but I'm not sure.

Question

Needing some help/understanding on this:

Scientists have discovered a galaxy at a distance of 600 billion kilometers from Earth. What is the distance, in AU, between the galaxy and Earth?

 400 AU

 600 AU

 4000 AU

 6000 AU

I think it's A or C, but I'm not sure.

anonymous · Answer

If there is approximately 150,000,000 (150 million) kilometers in an AU, and the distance between Earth and the galaxy is 600,000,000,000 (600 billion) kilometers away, what basic mathematical function (addition, subtraction, multiplication, division) would you need to use in order to calculate the distance in AU? 

You are right, it is either A or C. Remember, one of the 4 fundamental arithmetical functions.