Answer:
40 Sixth grade students.
Step-by-step explanation:
First, I assume you are asking, "If 100 students are at the school how many like hip-hop?" That sentence seemed cut off.
Anyways, to answer this, we need to find 40% of 100.
40% = 0.40
100 × 0.40 = 40
40 students is 40% of 100 students, and therefore;
40 students like hip-hop.