A school has four classes with 10, 20, 30, and 40 students respectively. The pass percentages of these classes are 20%, 30%, 60%, and 100% respectively. What is the pass percentage of the entire school?
Q1. A school has four classes with 10, 20, 30, and 40 students respectively. The pass percentages of these classes are 20%, 30%, 60%, and 100% respectively. What is the pass percentage of the entire school?
Answer: 66%
Explanation: The correct value is 66%. Apply the formula or arithmetic step shown in the question and