Cllub flag

The children had the club flag sewn on. The red color covered 2/20 of the total area of the flag, the blue area a fifth, the yellow 19% of the total area. What% is the green area occupied?

Correct result:

p =  51 %

Solution:

$p=100-19-{\displaystyle \frac{2}{20}}\cdot 100-{\displaystyle \frac{1}{5}}\cdot 100=51\mathrm{\%}$

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