To find out what percent of the children in the class are girls who wear glasses, we first need to determine two percentages:
The percentage of students that are girls, which is given as 40%.
The percentage of these girls who wear glasses, which is 20% of the 40%.
To find the second percentage, we multiply 40% (the percentage of girls) by 20% (the percentage of girls who wear glasses):
0.40 (girls in the class) × 0.20 (girls that wear glasses) = 0.08
0.08 is equal to 8%, so 8% of the students in the class are girls who wear glasses.
In the class, 8% of the children are girls who wear glasses. This is calculated by multiplying 40% (the percentage of girls) by 20% (the percentage of girls who wear glasses). Therefore, 8% of the students are girls who wear glasses.
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