Math CentralQuandaries & Queries


Subject: Baby weight gain
Name: Reynaldo
Who are you: Student

A baby weighed 3.2 kg at birth. She gained 0.17 kg per week. How old was she when she weighed 5.75 kg?

Hi Reynaldo,

When the baby weighs 5.75 kg she will have gained 5.75 - 3.2 = 2.55 kg. She gains 0.17 kg per week so how many weeks does it take to gain 2.55 kg?


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