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aivan3 [116]
3 years ago
10

SAVE ME PLS

Mathematics
1 answer:
Andrej [43]3 years ago
6 0

Answer:

81

Step-by-step explanation:

Set up a proportion to find how many total students there are [notice how females are on top and totals are on the bottom of the ratios]

\frac{4}{9} = \frac{396}{x} so cross multiply 4x = 396(9) so x = 891, if there are a total of 891 students and you need 1 teacher per 11 students then take 891/11 so you need 81 teachers.

You could set up another proportion 1/11 = x/891

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