其它
Bella and her brother agreed to share a pizza which was cut into $15$ slices. Bella ate $40$\% of the pizza. How many slices did she eat? 
Overseas Competition->Knowledge Point->Word Problem Modules->Solving Problems Involving Fractions and Percentages->Percentages Word Problems
$15 \times 40$\%=$6$,  She ate $6$ slices. 