Question
Farmer Jack has 4 ducks. The mass of Duck M is the same as the average mass of the 4 ducks. Duck N weighs 2 kg less than the average mass of the 4 ducks. The mass of Duck P is 10 kg more than the average mass of the 4 ducks. The mass of Duck Q is 6 kg. Find the total mass of the 4 ducks.
3 m

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Farmer Jack has 4 ducks. The mass of Duck M is the same as the average mass of the 4 ducks. Duck N weighs 2 kg less than the average mass of the 4 ducks. The mass of Duck P is 10 kg more than the average mass of the 4 ducks. The mass of Duck Q is 6 kg. Find the total mass of the 4 ducks.