Răspunsuri

2014-09-05T20:20:31+03:00
A + B = 240
A = 3/5 * B
3/5B + B = 240
3B + 5B = 1200
8B = 1200
B = 150
A = 240 - 150
A = 90
1 5 1
Cel mai inteligent răspuns!
2014-09-05T20:44:21+03:00
A=3b/5⇒ 
a+b=240⇒ 3b/5+b=240
aducem la acelasi numitor (amplificam cu 5 ) si apoi renuntam la numitor
3b+5b=240*5⇒ 8b=240*5⇒ b=240*5/8=150 
a=3*150/5=90
2 5 2