R=24
I say this because 24 / 2 = 12
You and find this by multiplying 2 to 12 to get it to the other side resulting in
24=r
4^3/2 or 5^3/2
Anything with 3/2 in the exponent
Answer:
I think the answer may be D. I am not certain but I would choose D.
Step-by-step explanation:
T is equal in both situations ... d = r X t so d/r = t
c is rate of waters current

14(12 - c) = 7(12 + c)
2(12 - c) = 12 + c
24 - 2c = 12 + c
12 = 3c
4 = c The rate of the waters current is 4 miles per hour.