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a boat is going 144 miles upstream on a river. the speed of the boat in still water is 60 miles per hour. the speed of the river current is 80% less than the speed of the boat in still water. how long does the journey take?

Respuesta :

Answer:

45

Step-by-step explanation:

chloeluo15

Answer:

3 hours

Step-by-step explanation:

the speed of the river current is 80% less

80% of 60 is 48

so the speed is now 48 mph, because the river is pushing the boat back (duh)

144 miles/ 48 mph is 3 hours.

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