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`        A hunter wishes to cross a river that is 1.5km wide and flows with a velocity of 5km/h parallel to its bank.The hunter uses a small powerboat that moves at a maximum speed of 12km/h with respesct to the water.What is the minimum time for crossing?`
6 years ago

vijesh jayan
49 Points
```										LET Vw BE THE SPEED OF BOAT
AND VB BE THE SPEED OF WATER
AND VBW=VB-VW  -- (1)
GIVEN THAT VW=5Km/h
& VBW=12Km/h
& distance between the banks=1.5Km
FROM Eq (1)
12=VB-(-5)
=VB+5 → VB=7Km/h
T=[DISTANCE OF THE BANKS]/VB
T=1.5/7
T=0.214 hrs =12.85 min
is what i think
I am not sure with this sum

```
6 years ago
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