Question

A baby weighed 8 pounds when she was first born. She weighed 15 pounds at her 6-month doctor's check-up. What was her percent increase in weight from birth to 6 months? O A. 87.5% OB. 90% O C. 53% D. 7%

Answer 1

Given:

Initial weight is 8 pounds.

Final weight after 6 months is 15 pounds.

The objective is to find the increase in weight from birth to 6 months.

The increase in percentage of initial weight can be calculated as,

$(\frac{x}{100})Initial\text{ weight=Final weight}$

Substitute the given values in the above equation.

$\begin{gathered} (\frac{x}{100})8=15 \\ \frac{x}{100}=\frac{15}{8} \\ \frac{x}{100}=\frac{15}{8} \\ \frac{x}{100}=\frac{7}{8} \\ x=\frac{7}{8}\cdot100 \\ x=87.5\text{ } \end{gathered}$