Question
Farmer Dylan has 4 hens. The mass of Hen R is the same as the average mass of the 4 hens. Hen S weighs 7 kg less than the average mass of the 4 hens. The mass of Hen T is 9 kg more than the average mass of the 4 hens. The mass of Hen U is 14 kg. Find the total mass of the 4 hens.
3 m

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Farmer Dylan has 4 hens. The mass of Hen R is the same as the average mass of the 4 hens. Hen S weighs 7 kg less than the average mass of the 4 hens. The mass of Hen T is 9 kg more than the average mass of the 4 hens. The mass of Hen U is 14 kg. Find the total mass of the 4 hens.