SOLUTION: I need the equation for this word problem Bob is driving to Florida for the winter he divides the trip up into three days the entire trip takes 20 hours and he drives three hou

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Question 997292: I need the equation for this word problem
Bob is driving to Florida for the winter he divides the trip up into three days the entire trip takes 20 hours and he drives three hours longer the second day then the first and on the third day he drives three hours less than double the first how long did you drive each day

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +t+ = time in hours spent
driving on the 1st day
---------------------
+t+%2B+3+ = hours spent driving
on the 2nd day
--------------
+2t+-+3+ = hours spent driving
on the 3rd day
---------------
+t+%2B+t+%2B+3+%2B+2t+-+3+=+20+
+4t+=+20+
+t+=+5+
and
+t+%2B+3+=+5+%2B+3+
+t+%2B+3+=+8+
and
+2t+-+3+=+2%2A5+-+3+
+2t+-+3+=+7+
---------------
5 hours the 1st day
8 hours the 2nd day
7 hours the 3rd day
-------------------
check:
+5+%2B+8+%2B+7+=+20+
+20+=+20+
OK