ratio of boys : girls : all students
7 : 5 : 12
multiply all by 13
91 : 65 : 156
there are 65 girls
Answer:
65
Step-by-step explanation:
total girls/ total students = 5/(5+7)
total girls/ 156 = 5/12
total girls = [(156)(5)]/ 12
total girls= 65
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