SOLUTION: The farmer and his son leave a barn at the same time and walk in opposite directions checking a fence line. The son walks at a speed of 3.5 km/h, and the farmer at 4.0 km/h. How mu
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Question 28620: The farmer and his son leave a barn at the same time and walk in opposite directions checking a fence line. The son walks at a speed of 3.5 km/h, and the farmer at 4.0 km/h. How much time will have elapsed when the farmer and his son are 2.5 km apart?
Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
Let the time be x
3.5x+4x=2.5
7.5x=2.5
x=2.5/7.5 or 1/3
Hence, after 1/3 hours they are 2.5 km apart.
Paul,
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