Academy girl calculation

There are 180 pupils in the first year of the academy. Seven girls for every five boys, so there are how many girls in the year?

Final Answer:

d =  105

Step-by-step explanation:

d+c = 180 5d = 7c  d = 7/5 c  57 c+c=180  7/5 c+c=180  12c=900  c=12900=75  c=75  d=57 c=57 75=57 75=5525=105



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