Răspunsuri

  • Utilizator Brainly
2014-03-29T12:09:16+02:00
A=2b/3 ⇔ b=3a/2;
a=75%·c=3c/4 ⇔ c=4a/3;
a+b+c=230 ⇒ a+3a/2+4a/3=230 ⇒ 6a+9a+8a=1380 ⇒ 23a=1380, a=60;
b=3a/2=90;
c=4a/3=80.
2014-03-29T12:10:25+02:00
A=2B/3 rezulta B=3A/2 A=75C/100 rezulta C=100A/75=4A/3 A+B+C=230 A+ 3A/2+ 4A/3 =230 6A+ 9A+ 8A=230 23A=230 A=10 B=3*10/2=15 C=4*10/3=40/3 Sper ca e corect :)