• anonymous
HELP! 72 students in school can ski, this is 24% of enrollment. how many are enrolled? How do I do this
  • Stacey Warren - Expert
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  • katieb
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  • mathteacher1729
The big idea with percentage problems like these is "X percent means X over 100". \[32% = \frac{32}{100}\] \[5% = \frac{5}{100}\] etc... So now the problem says 72 students out of (???) is the same as 24 out of 100. So we set up this equation: \[\frac{72}{X}=\frac{24}{100}\] "72 out of (???) is the same as 24 out of 100." Now just cross multiply and solve for X. Hope this helps. :)
  • mathteacher1729
Oh dear, something went wrong with the math formatting... Here were the examples I was trying to type up: \[32\% = \frac{32}{100}\] \[5\% = \frac{5}{100}\] Hope this works better..

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