ijohnh14
29.11.2019 •
Mathematics
For every girl taking a material arts class there are 3 boys taking the same class if there are 236 students at the school predict how many of them are boys
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Ответ:
Divide 236 by four=59
Then times 59 by 3
The ratio now is 177:59
3:1
Ответ:
1st equation: x + y = 236
But for each y(boy), there 3x(girls)
2nd equation: y = 3x
Now solve :
|x + y = 236
| y = 3x
|x + y = 236
|- 3x + y = 0
You'll find x(girls) = 59 and y(boys) = 177
Ответ:
7 It is correct.
8