Răspunsuri

2014-07-27T08:18:04+03:00
 \frac{a}{2} = \frac{b}{3} = \frac{c}{5}=k
a=2k
b=3k
c=5k
a*b=5400
2k*3k=5400
6k² =5400
k²=5400/6
k²=900
k=30
a=60
b=90
c=150