man weight = 72kg
wife weight = 20% less
son weight = 10% more
son weight = ?
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72 + 10% = 72 + 10/ 100 = 72 + 0.1 = 72.1 kg
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0
Answer:
son weight = 10/100*72 = 7.2 + 72 = 79.2 kg
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