



 
Hi Laura. Percentages are just fractions where the denominator is 100. So if you have 20 students and 8 of them are girls, then that means 12 are boys. So boys are 12/20 of the students. To find the percentage, you convert this to a fraction where the denominator is 100. There are two easy ways to do this:
Use whichever method you find easiest, but the second one is more versatile if you can't immediately see what to multiply the denominator by to get 100. Cheers,  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 