The average score in an English exam of a class of 45 students in a coaching centre is 52. A group of 6 boys having an average score of 40 leave the class and another group of eight boys having an average score of 43 join the class. What is the new average score of the class?

52

Sum of Marks of class of 45 = 45 x 52

Sum of Marks of 6 student who left = 6 x 40

Sum of Marks of 8 student who joined = 8 x 43

Total Marks of new class = 2444

Total Number student in new class = 47

Avg. Marks = \(\frac{2244}{47}\) = 52