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Clerry
13.01.2021 •
Mathematics
A fish swins 12 miles upstream in 4 hours. The return trip only takes 3 hours. Find the rate of the current
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Ответ:
1/2 mph
Step-by-step explanation:
Given :
Distance traveled, D = 12 miles
Upstream Swim time = 4 hours
Return swim time = 3 hours
Upstream rate = 12/4 = 3 mph
Return rate = 12/3 = 4 mph
Let
swim rate = s
Current rate = c
s - c = upstream rate
s + c = return rate
s - c = 3 - - - (1)
s + c = 4 - - -(2)
From (1)
s = 3 + c
Put into (2)
3 + c + c = 4
3 + 2c = 4
2c = 4 - 3
2c = 1
c = 1/2 mph
Hence, rate of current = 0.5mph
Ответ:
I LOVE YOUU
Step-by-step explanation: