In a class of 50 students, 20 study Mathematics, 25 study Science, and 10 study
Practice Questions
Q1
In a class of 50 students, 20 study Mathematics, 25 study Science, and 10 study both. How many students study at least one of the subjects?
35
40
45
50
Questions & Step-by-Step Solutions
In a class of 50 students, 20 study Mathematics, 25 study Science, and 10 study both. How many students study at least one of the subjects?
Step 1: Identify the number of students studying Mathematics, which is 20.
Step 2: Identify the number of students studying Science, which is 25.
Step 3: Identify the number of students studying both subjects, which is 10.
Step 4: To find the total number of students studying at least one subject, use the formula: Total = (Students studying Mathematics) + (Students studying Science) - (Students studying both subjects).
Step 5: Plug in the numbers: Total = 20 + 25 - 10.
Step 6: Calculate the total: 20 + 25 = 45, then 45 - 10 = 35.
Step 7: The final answer is that 35 students study at least one of the subjects.
