Class

In 7.C clss are 10 girls and 20 boys. Yesterday was missing 20% of girls and 50% boys. What percentage of students missing?

Result

x =  40 %

Solution:

x=100⋅ (0.20⋅ 10+0.50⋅ 20)/30=40=40%x=100 \cdot \ (0.20 \cdot \ 10+0.50 \cdot \ 20)/30=40=40 \%

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