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- Solutions 3

Let there be two planets X and Y with masses M _{X} and M_{Y} . The radius of planet X is twice that of planet Y. If an object weighs 4 times as much on the surface of planet X as it does on the surface of planet Y, then M_{X}/M_{Y} is given by

A. 1/8

B. 16

C. 1/4

D. 8

E. 1

F. 1/16

G. 1/2

H. 2

I. 4