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?

Correct answer:

x =  40 %

Step-by-step explanation:

$x=100\cdot (0.20\cdot 10+0.50\cdot 20)\mathrm{/}30=40\mathrm{\%}$

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