In the 7C class, there are ten girls and 20 boys. Yesterday was missing 20% of girls and 50% of boys. What percentage of students are missing?

Correct answer:

x =  40 %

Step-by-step explanation:

g=10 b=20  q1=20%=10020=51=0.2 q2=50%=10050=21=0.5  x=100 b+gq1 g+q2 b=100 20+1051 10+21 20=40%

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