The conversion factors are 42 gallons in a barrel
4 quarts = 1 gallon. I use unit analysis to get answers for questions like these.

All the units are in the numerator. There are 120 * 42* 4 = 20160 quarts in 120 barrels.
It would be 10 because it goes from 12-10-8
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I Hope I Helped

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Answer:
12
Step-by-step explanation: