Question

Daca a reprezinta 40% din b si 60% din c iar a+b+c=62,sa se afle a,b si c.
dau 18 puncte+coroana+multumesc+5 stelute
va rog imi trebuie maine

Answer 1

a=40%b=2b/5        b=5a/2
a=60%c=3c/5      b=5/2×3c/5=3c/2                       
a+b+c=62
3c/5+3c/2+c=62
6c+15c+10c=620
31c=620
c=20
a=3*20/5=12
b=3*20/2=30