Multiple ratio

The numbers of boy students, girl students, teachers and other staff of the school are in the ratio 14: 12: 2: 1.
How many teachers are there at school if there are 216 girl students at school?

Correct answer:

c =  36

Step-by-step explanation:

a:b:c:d=14:12:2:1 b=216  a=14x b=12x c=2x d=1x  x=b/12=216/12=18  c=2 x=2 18=36

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