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30.06.2019 •
Mathematics
There are 12 girls in a class this is 40% of the class how many boys are in the class?
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Ответ:
1200/40=30
30-12=18
there are 18 boys in the class
Ответ:
The answer is 18 boys.
Step-by-step
To start off, you have to set up the problem as 40 percent over 100 percent equals 12 over x. Next, you multiply 100 and 12. You should get 1,200. Then, you divide 1,200 by 40. You will get 30. 30 is the amount of the whole class. Finally, you should subtract 30 and 12. You will then have your answer, 18.
Hope this helps! :)
Ответ:
Step-by-step explanation:
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