The mass of the Earth is close to 5.97x10^24 kg and the mass of Venus is close to 4.87x10^24 kg. What is the approximate combined mass of both planets

Question

A.1.08x10^25
B.2.91*10^49
C.1.08^10^48
D.1.08*10^25

Answer 1

I get 10.84 * 10^24 = 1.084 * 10^25

A and D are the same, except for the notation.