If there are 45 students and 40% are girls how many are boys?

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How do I know what numbers to use and how do I set up to solve.

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Answer 1 · 2018-04-17T00:48:08

#27# boys.

#"Number of student"s = 45#

#"Number of girls" = (40/100 * 45) = "18 girls"#

#"Number of boys" = "Total Number of students" - "Number of Girls"#

# = 45 - 18 = "27 boys"#