There are 28 kids in class, 21% are boys, how many girls are in the class?

Answer 1

if there are 21% boys then there are 100%-21% = 79% girls

79% = 0.79

28 x 0.79 = 22.12 girls. or rounding it off to nearest integer, there are 22 girls

28 x .21 = 5.88 boys, or 6 boys

6 + 22 = 28 total students

Answer 2

If you multiply 28(0.79)=22.12 so there are 22 girls in the class.