Thirty boys and x girls sat for a test. The mean of the boys' scores and that of the girls were respectively 6 and 8. Find x if the total scores was 468
A
38
B
24
C
36
D
22
E
41
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Number of boy's = 30
Number of girls = x
Mean of boys' score = 6, for girls = 8
Total score for boys = 30 x 6
Total score for both boys and girls = 468
180 + 8x = 468
x = \(\frac{288}{8}\)
= 36
Source: Myschool Past Questions Archive (Record #32336)