Question

Mean of 30 girls of a class is 44% and 50 boys is 42% find the mean for the whole class?

Answer 1

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%