khuak877
08.12.2020 •
Mathematics
In the classroom the ratio of students who wear glasses to those who don't where glasses is 3:7. If there are 30 students in the classroom, how many wear glasses?
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Ответ:
30
Step-by-step explanation:
3:7
30 students
3\10×30=9
7\10×30=21
9+21=30
Ответ: