Answer:
B
Step-by-step explanation:
Begin by answering this question: Which is bigger 10^5 or 10^3?
10^5 = 100,000
10^3 = 1000
So the correct answer is going to found by comparing the 10^5 number to the 10^3 number.
Jupiter: the Earth's moon :: 1.4*10^5 : 3.5 * 10^3
Jupiter / Earth's moon = 1.4 * 10^5 / 3.5 * 10^3
Jupiter/ Earth's moon = 40/1
That's a surprising result that I didn't know before. I thought the difference would be much larger.
As an add on can you do this on your calculator (using scientific notation)?
If not you could do it like this
Jupiter / earth's moon = 140000 / 3500