SOLUTION: The ratio of boys to girls in the assembly was 5 to 4. If 180 students were in the assembly, how many girls were there?

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Question 402437: The ratio of boys to girls in the assembly was 5 to 4. If 180 students were in the assembly, how many girls were there?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
5x+4x=180
9x=180
x=20
boys 5x=100
girls 4x=80