Question

In a school there are 35 student in class 2A and 40 students in class 2B.the mean score for class 2A in an English literature exam is 60 and that of 2B in the same paper is 52.5.find to one place of decimal the mean for the combined classes (jamb)

Answer 1

Answer:

56

Step-by-step explanation:

mean score for class 2A is 60

and class 2B  is 52.5

now , total student = (35 + 40)= 75

total number = 35×60 + 40×52.5 = 4200

the mean for the combined classes = 4200÷75 = 56