document.write( "Question 404972: If you travel 840 light years in 7 days at 120 light years per day...how fast would you have to travel to make the same trip (840 light years)in 12 hours or half day? \n" ); document.write( "
Algebra.Com's Answer #286157 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
840 ly/12 hr = 70 ly/hr
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