Answer :
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there is 4 quarts in one gallon so 40 × 4 ≡160 so 160 is your answer
Do 4*40=160 quarts
since there is 40 gallons and there are 4 quarts in a gallon so you would times 4 by 40 then you get 160 quarts
since there is 40 gallons and there are 4 quarts in a gallon so you would times 4 by 40 then you get 160 quarts