Averages · Question 7 · Medium
Averages question 7
A section of 30 students has an average score of 60 and another section of 20 students has an average of 75. What is the average score of all 50 students?
- 66
- 67.5
- 65
- 68
Answer and explanation
Answer: A. 66
Explanation: Total = 30 × 60 + 20 × 75 = 1,800 + 1,500 = 3,300. Average = 3,300 ÷ 50 = 66.
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