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crimeas [40]
4 years ago
7

At the banquet, the ratio of the number of girls is 5 : 3. Halfway through the banquet, 20 boys leave and the ratio becomes 5:4.

How many girls are at the banquet?
Mathematics
1 answer:
snow_lady [41]4 years ago
7 0
\frac{5}{8}x-20=\frac{5}{9}x\\-20=\frac{-5}{72}x\\x=288\\\frac{3}{8}(288)\\108

108 girls
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