wramos5957 wramos5957

26-10-2014
Mathematics

Answered

the student to teacher ratio is 15:3. if there are 90 teachers at the school, how many students are there

Answer :

konrad509 konrad509

26-10-2014

[tex]15x+3x=90\\ 18x=90\\ x=5\\\\ 15x=15\cdot5=\boxed{75}[/tex]

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26-10-2014

90/3 = 30
30*15=450 Students

To check: 15:3 (divide by three)
5:1
So should be five times as many students.
90*5=450 :) Hope this helps :)

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