SOLUTION: Mrs. Smith's class has 15 girls and 12 boys. The entire school has 300 girls and the same proportion f girls to boys as Mrs. Smith's class. How many boys does the entire school hav

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Mrs. Smith's class has 15 girls and 12 boys. The entire school has 300 girls and the same proportion f girls to boys as Mrs. Smith's class. How many boys does the entire school hav      Log On


   

Question 388746: Mrs. Smith's class has 15 girls and 12 boys. The entire school has 300 girls and the same proportion f girls to boys as Mrs. Smith's class. How many boys does the entire school have?
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
b=# of boys
15/12=300/b
15b=3600
b=3600/15
b=240

Answer: 240 boys