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Mathematics, 21.10.2021 14:30 jholland03

The mass of a baby boy at birth was 3.6kg. When he was 6 months old and 12 months old, his masses were 7.2kg and 10.0kg respectively. What was the percentage increase in his masses at 13 months old as compared with a) his mass at birth
b) his mass at 6 months old

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