In a school, there are 35 students in class 2A and 40 in class 2B. The mean score for class 2 in an English Literature examination is 60.0 and that for 2B in the same paper is 52.5. Find, to one place of decimal, the mean for the combined classes
A
2.5
B
56.0
C
56.2
D
56.3
E
6.5
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
Total score for 2A & 2B = 4200
mean score = \(\frac{4200}{40 + 35}\)
= \(\frac{4200}{75}\)
= 56
Source: Myschool Past Questions Archive (Record #32623)