SOLUTION: My question is from a work sheet.
Two trains in opposite direction pass each other on parallel tracks. One train averages at most 80 km/h, and the other averages at most 65km/h. W
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Question 80310: My question is from a work sheet.
Two trains in opposite direction pass each other on parallel tracks. One train averages at most 80 km/h, and the other averages at most 65km/h. What is the least possible time that it could take for the two trains to be 290 km apart.
TOTALLY LOST!!!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Two trains in opposite direction pass each other on parallel tracks. One train averages at most 80 km/h, and the other averages at most 65km/h. What is the least possible time that it could take for the two trains to be 290 km apart.
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Let x be the time needed for them to be 290 km apart.
1st train goes =<80x km
2nd train goes =<65x km
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INEQUALITY:
80x+65x=<290 km
145x =< 290 km
x =< 2 hrs
x = 2 hrs
===============
Cheers,
Stan H.
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