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)

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.