Teacher:In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
Teacher: Now, understand the problem? Solve this instance: Question: Allie looks for sunscreen at the store. She sees SPF 30 and SPF 100. Which likely protects her skin worse? 
 Answer: SPF 30
Student:
A sunscreen with a higher SPF value protects the skin longer.