Answer:
option b is your correct answer
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.............
Yes, it is a probability related question
Answer:
<h2>19 + 0i</h2>
Step-by-step explanation:

2x + 3 + x = 39
3x + 3 = 39
3x = 36
x = 12
One tank holds 12 gallons
The other tank holds 27 gallons