J's answer to Vivi's Primary 5 Maths Decimals Singapore question.
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Total weight of first 4 boys = 49.6kg x 4 = 198.4kg. Total weight of all 5 boys = 55.5kg x 5 = 277.5kg. So, weight of the 5th boy = total weight of all 5 boys - total weight of first 4 boys = 277.5kg - 198.4kg = 79.1kg
Date Posted:
5 years ago
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