In a school, there are 6 rows of 5 students each. During lunch, 2 students from each row move to another room. How many students are left in the school?
Answer
18 students
The correct answer is 18 students — There are 18 students left in the school.
Step-by-step solution
- Compute total students: 6 rows × 5 students = 30 students.
- Students moving away: 2 students/row × 6 rows = 12 students.
- Subtract the moved students from the total: 30 – 12 = 18 students.
- There are 18 students left in the school.
Common mistake: Subtracting before multiplying or miscounting rows
Concept tested: Subtraction after multiplication
Published · How this solution was prepared and checked
← All My Funday questions