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jenyasd209 [6]
3 years ago
12

Johnny and his father go fishing at 5:00 AM. After motoring 6 km upstream, Johnny writes a letter to his friend, puts the letter

in a bottle, and drops it into the river. The bottle floats in the current and reaches at 7:40 AM the point where Johnny and his father began their trip. If the speed of the boat in still water is 9 km/h, what is the speed of the river current?
Mathematics
2 answers:
Alik [6]3 years ago
8 0

Answer:9/2 km per hour

Step-by-step explanation:

equation,

6/9-x + 6/x=8/3

Olegator [25]3 years ago
8 0

Answer:

4.5km/h is the answer

Step-by-step explanation:

Rsm

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a> everybody
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If someone tells you your body temperature is 98.6°, what scale is being used? How do you know?
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