SOLUTION: In a class, the average score of girls in an examination is 73 and that of boys is 71. The average score of the whole class is 71.8. The percent of girls in the class is:
(1) 60
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Question 293856: In a class, the average score of girls in an examination is 73 and that of boys is 71. The average score of the whole class is 71.8. The percent of girls in the class is:
(1) 60% (b) 40% (c) 1.8% (d) 18%
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
.73g+.71b=.718(b+g)
g/b=2/3
g/b=40/60
g=40%
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