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)

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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