Question

It is normal for some newborn babies to lose weight in their first week of life. at one week old, anne's weight is 9 pounds. that is 10% lighter than she was at birth. what was the baby's birth weight?

Answer 1

By calculating backward from the 10% weight loss, Anne's birth weight is found to be 10 pounds.

Step-by-step explanation:

The question at hand involves a newborn baby's weight and how it changes over the first week of life. We are trying to determine the baby's birth weight. We're given that Anne's weight at one week old is 9 pounds, which is 10% less than her weight at birth.

To solve this, we start by recognizing that the 9 pounds represent 90% of her birth weight since she has lost 10%. We can set up the equation:

0.9 (Birth Weight) = 9 pounds

To find the birth weight, we divide both sides of the equation by 0.9:

Birth Weight = 9 pounds / 0.9

Birth Weight = 10 pounds

So, Anne's birth weight was 10 pounds.