Question
All students in Ridgewood Junior High School either got their lunch in the school cafeteria or brought it from home on Tuesday. 20% of students brought their lunch. 38 students brought their lunch. How many students in total are in Ridgewood Junior High School?
Answers
GPT-4o mini
Let \( x \) be the total number of students in Ridgewood Junior High School. According to the problem, 20% of the students brought their lunch. This can be expressed as:
\[
0.2x = 38
\]
To find \( x \), we divide both sides of the equation by 0.2:
\[
x = \frac{38}{0.2}
\]
Calculating the right side:
\[
x = 38 \div 0.2 = 38 \times 5 = 190
\]
Thus, the total number of students in Ridgewood Junior High School is
\[
\boxed{190}
\]
To verify, we calculate 20% of 190:
\[
0.2 \times 190 = 38
\]
This confirms the calculation as 38 students brought their lunch, which matches the information given in the problem. Therefore, the final answer is correct: there are indeed
\[
\boxed{190}
\]
students in total.
\[
0.2x = 38
\]
To find \( x \), we divide both sides of the equation by 0.2:
\[
x = \frac{38}{0.2}
\]
Calculating the right side:
\[
x = 38 \div 0.2 = 38 \times 5 = 190
\]
Thus, the total number of students in Ridgewood Junior High School is
\[
\boxed{190}
\]
To verify, we calculate 20% of 190:
\[
0.2 \times 190 = 38
\]
This confirms the calculation as 38 students brought their lunch, which matches the information given in the problem. Therefore, the final answer is correct: there are indeed
\[
\boxed{190}
\]
students in total.