Star 1 is 18 light years from Star 2 and 34 light years from Earth. If Star 2 explodes as a supernova, in how many years would the explosion be seen from Earth?

A. 18
B. 34
C. 52
D. 70

Question

Star 1 is 18 light years from Star 2 and 34 light years from Earth. If Star 2 explodes as a supernova, in how many years would the explosion be seen from Earth?

A. 18
B. 34
C. 52
D. 70

carmelle · Answer

There's also this picture, but idk how it helps...

MoE22 · Answer

well I know you probably answered already but I would think that since star 1 is 18 lightyears away and star 2 is 34 lightyears away then the answer would have to be 52.
but since star 2 is in front of star 1 then that would mean you would use a different tatic, possibly multiplication or addition or maybe even division. I am sorry I wasn't that much help, it's just I have no idea what the lesson was about except for the very little information you provided me with. 
-sincerely MoE

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