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zanaplen27
06.10.2019 •
Mathematics
Of the people at sunrise school, 40% are female students, 5% are staff, and the remaining people are male students. there are 270 more male students than female students. how many people are at sunrise school?
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Ответ:
The total number of people is 1800
Step-by-step explanation:
If N is the total number of people in the school.
We know that 0.4*N = number of girls = Ng
0.05*N = staff = Ns
0.55*N = number of male students = Nm
We also know that
Ng + 270 = Nm
Now, we can wrie this as:
0.4*N + 270 = 0.55*N
And we solve it for N
270 = (0.55 - 0.4)*N = 0.15*N
N = 270/0.15 = 1800
Ответ:
A= 2 C−8X+5B −2X