SOLUTION: Sam was on a diet.Over a 4-week period he lost 5.4 kg,gained 3.375kg,lost3.6kg and gained 1.575 kg.How much did he gain or lose over all?

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Question 627940: Sam was on a diet.Over a 4-week period he lost 5.4 kg,gained 3.375kg,lost3.6kg and gained 1.575 kg.How much did he gain or lose over all?
Answer by Maths68(1474) About Me  (Show Source):
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Total Gain = 3.375kg + 1.575kg = 4.945kg
Total Lost = 5.4 kg + 3.6kg = 9.000kg
He lost = 9.000-4.945 = 4.055 kg