SOLUTION: A train travels 600 mi. in the same time that a truck travels 520 mi. Find the speed of each vehicle if the trains average speed is 8 mph. faster than the truck's.
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Question 410401: A train travels 600 mi. in the same time that a truck travels 520 mi. Find the speed of each vehicle if the trains average speed is 8 mph. faster than the truck's.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
t = d / r ___ the times are equal
600 / (r + 8) = 520 / r
"cross" multiplying ___ 600r = 520r + 8(520)
80r = 8(520) ___ r = 52
r + 8 = 60
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