SOLUTION: The diameter of the Milky Way disc is approximately 9x10^20 meters. How long does it take light, traveling at 10^16 m/year to travel across the diameter of the Milky Way? Any help

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Question 265209: The diameter of the Milky Way disc is approximately 9x10^20 meters. How long does it take light, traveling at 10^16 m/year to travel across the diameter of the Milky Way?
Any help with this question would be appreciated. Thanks.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
9*10^20/10^16
9*10^(20-16)
9*10^4
90,000 YEARS TRAVEL TIME ACROSS THE MILKY WAY DISC.