Mean of 30 girls of a class is 44% and 50 boys is 42% find the mean for the whole class?
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Answer:
42.75%
Step-by-step explanation:
mean of 30 girls is 44%
total girls =30×44%=13.2
mean of 50 boys=42%
total boys=50×42%=21
mean of total class
=sum of girls and boys/ no. of girls and boys
=(13.2+21)/(30+50)=0.4275×100= 42.75%
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