SOLUTION: Monica has 15 boys and 5 girls in her class.The school has the same proportion of students with 640 students.What is the proportion?

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Question 707460: Monica has 15 boys and 5 girls in her class.The school has the same proportion of students with 640 students.What is the proportion?
Answer by vheroli(126) About Me  (Show Source):
You can put this solution on YOUR website!
15+5=20
5%2F20+=+1%2F4+girls while 15%2F20=3%2F4+boys
Therefore:
640%2A%281%2F4%29+=+160+girls+
640%2A%283%2F4%29+=+480+boys