There were twice as many girls as boys in a class. If 30% of the girls and 45% of the boys have already handed over their reports, what percent of the students have not yet done so?
Let's assume there are x boys in the class. Then, the number of girls will be 2x because there are twice as many girls as boys.
The total number of students in the class is x + 2x = 3x.
Now, let's calculate the number of students who have handed over their reports.
The number of boys who have handed over their reports is 45% of x, which is 0.45x.
The number of girls who have handed over their reports is 30% of 2x, which is 0.6x.
So, the total number of students who have handed over their reports is 0.45x + 0.6x = 1.05x.
Therefore, the number of students who have not yet handed over their reports is 3x - 1.05x = 1.95x.
The percentage of students who have not yet handed over their reports is:
(1.95x / 3x) * 100% = 65%
So, 65% of the students have not yet handed over their reports
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