Question
The mass of 4 children, Usha, Linda, Warren and Riordan were taken. Only 3 children can be weighed at one time. Usha, Linda and Warren weighed a total of 127 kg. Linda, Warren and Riordan weighed a total of 130 kg. Usha, Warren and Riordan weighed a total of 149 kg. Usha, Linda, and Riordan weighed a total of 62 kg. What is the average mass of the 4 children?
3 m

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The mass of 4 children, Usha, Linda, Warren and Riordan were taken. Only 3 children can be weighed at one time. Usha, Linda and Warren weighed a total of 127 kg. Linda, Warren and Riordan weighed a total of 130 kg. Usha, Warren and Riordan weighed a total of 149 kg. Usha, Linda, and Riordan weighed a total of 62 kg. What is the average mass of the 4 children?