Answer: C. the rate of the current
Step-by-step explanation: took the test
Answer:
1 mph
Explanation:
EQUATIONS:
b+c = 7 mph
b-c = 5 mph
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Add the two to get:
2b = 12 mph
b = 6 mph (speed of the boat in still water)
c = 1 mph (speed of the current)
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