Answer:
245 Gallons
Explanation:
First, simply 12 to 6 by dividing 12 / 2 = 6
Do the same for 70, 70 / 2 = 35
Now multiply by 7 to get 42 cows, 6 x 7 = 42,
And now do 35 x 7 = 245 Gallons :D
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