A group of students and teachers go on a school trip, of which 180 are students.
25% of the group are from the eighth grade, 20% are from the ninth grade, 40% are from the seventh grade, and the rest of the group are teachers.
How many students from the seventh and eighth grades go on the trip?
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: The eighth-grade students make up 25% of the students. Therefore, the number of eighth-grade students is
students.
Step 2: The seventh-grade students make up 40% of the students. Therefore, the number of seventh-grade students is students.
Step 3: Adding the number of students from the seventh and eighth grades gives us: students.
Therefore, the number of students from the seventh and eighth grades that go on the trip is 117 students.
117 students