The weight of baby increased by 33.33%.
By how much percentage, weight of baby increased.
Let her weight increased by p percent. Then:
[tex]p = \dfrac{\text{increment in weight }\times 100}{\text{initial weight}}\%\\\\p = \dfrac{(24 - 18) \times 100}{18}\\\\p = \dfrac{6}{18} = 33.333... \%\\\\p \approx 33.33%[/tex]
Thus, the weight of baby increased by 33.33%.
Learn more about percentages here:
https://brainly.com/question/8011401