Răspuns :
A=L*l
semiP=L+l=42
75% din L=l
75/100*L=l
3L/4=l
L+3L/4=42 aducem la acelasi numitor
4L+3L=168
7L=168
L=24 24*3/4=18 l=18
semiP=L+l=42
75% din L=l
75/100*L=l
3L/4=l
L+3L/4=42 aducem la acelasi numitor
4L+3L=168
7L=168
L=24 24*3/4=18 l=18