SOLUTION: Each day Bob walks back and forth to work from his home following the same path. He always walks at 2km/h going up hills, at 3km/h on ground level, and at 6 km/h going down hills.

Question 624228: Each day Bob walks back and forth to work from his home following the same path. He always walks at 2km/h going up hills, at 3km/h on ground level, and at 6 km/h going down hills. If the duration of a daily round trip is 2 hours, what distance does Bob walk from his home on his way to work?
ANSWERS:
A. 3km
B. 4km
C. 2km
D. 1km
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Any combination of uphill, downhill, and level
( km/hr ) x ( hrs ) = km
walking will have add up to km
or more adding any level or downhill walking
will push the total over 4 km, so the answer
is (B) 4 km
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