Answer:
You want 40% of 140 gallons to be methane,
so 60% of 140 gallons is water
methane: 0.4(140) = 56 gallons
water: 0.6(140) = 84 gallons
Step-by-step explanation:
1/2
-5 + 12 is 7
-2 - 8 is -10
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Answer: the answer is 1000years of death!!!