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12 March, 22:01

Sara's new baby brother is 0.54 meters long and currently weighs 4.1 kg. The doctor said the baby should gain about one hundred thirty-six grams per week. At that rate, calculate how many TOTAL kilograms he weighs in 3 months. Kilograms (round to the nearest tenth)

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  1. 12 March, 23:17
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    Answer: The total weight of the baby after 3 months should be 5.732 kg.

    Explanation:

    Weight of the Sara's brother = 4.1 kg = 4100 g (1 kg = 1000 g)

    Rate by which baby should gain weight = 136 g/week

    In 1 week baby should gain = 136 g

    1 month = 4 week

    So, in 3 months = 4 * 3 = 12 weeks

    So, weight gain by baby in 12 weeks = 12 * 136 g = 1,632 g

    Total weight of the baby = 1,632 g + 4100 g = 5,732 g = 5.732 kg

    The total weight of the baby after 3 months should be 5.732 kg.
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