Question

Intro clasa in 27elevi .Afla nr fetelor si al baietilor stiind ca fete is cu 25% mai multe

Answer 1

[tex]x=baieti\\ y=fetele\\ y=x+\frac{25x}{100}\\ x+y=27\\ x+x+\frac{x}{4}=27\\ 2x+\frac{x}{4}=27|*4\\ 8x+x=108\\ 9x=108 \Rightarrow x=12\ baieti\\ y=12+\frac{12}{4}\\ y=12+3 \Rightarrow y=15\ fete[/tex]