Question
Farmer Neave has 4 dogs. The mass of Dog K is the same as the average mass of the 4 dogs. Dog L weighs 4 kg less than the average mass of the 4 dogs. The mass of Dog M is 5 kg more than the average mass of the 4 dogs. The mass of Dog N is 12 kg. Find the total mass of the 4 dogs.
3 m

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Farmer Neave has 4 dogs. The mass of Dog K is the same as the average mass of the 4 dogs. Dog L weighs 4 kg less than the average mass of the 4 dogs. The mass of Dog M is 5 kg more than the average mass of the 4 dogs. The mass of Dog N is 12 kg. Find the total mass of the 4 dogs.