On the river current a canoe traveled 30 km in 3 hours and 20 min, against the current the canoe traveled 28 km in 4 hours. how far will the canoe go in 1.5 hours on the lake?

12 km

Step-by-step explanation:

Let

x km/h = speed of the canoe on the lake

y km/h = speed of the current

With the current:

Speed = x + y km/h

Distance = 30 km

Time = 3 hours 20 minutes = hours

Thus,

Against the current:

Speed = x - y km/h

Distance = 28 km

Time = 4 hours

Thus,

Add these two equations:

On the lake:

Time = 1.5 hours

Speed = 8 km/h

Distance

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

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step-by-step explanation: