A teacher has 18 chocolates. She gives 4 chocolates to each of her 3 students, then takes back 2 chocolates from each student. How many chocolates does the teacher have after these actions?
Answer
12 chocolates
The correct answer is 12 chocolates — Thus, the teacher ends with 12 chocolates.
Step-by-step solution
- Teacher starts with 18 chocolates.
- She gives 4 chocolates to each of 3 students: total given = . Subtract from her stock: chocolates remain.
- She takes back 2 chocolates from each student: total taken back = . Add to her stock: chocolates.
- Thus, the teacher ends with 12 chocolates.
Common mistake: Adding the taken-back chocolates before subtracting the given ones
Concept tested: Give and take with multiple recipients
Published · How this solution was prepared and checked
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