Class 10, consisting of 40 students, took a science test. 30 students had an average score of 95. The other students had an average score of 85. What is the average score of the whole class?
Answer & explanation
Correct answer: option 2
Sum of score of 30 students = 30 x 95 = 2850
Sum of score of 10 students = 10 x 85 =850
Average of whole class = \(\frac{2850 + 850}{40}\) = 92.5