Question
Gabby has a mass of 57 kg. Lucy weighs 11 kg more than Gabby but 6 kg less than Shiyun. Find the total mass of the 3 girls.
4 m

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Gabby has a mass of 57 kg. Lucy weighs 11 kg more than Gabby but 6 kg less than Shiyun. Find the total mass of the 3 girls.