Question

Aflati trei numere stiind ca suma lor este 90 si ca ele sunt direct proportionale cu 2,3 si 4.

Answer 1

a+b+c=90
{a,b,c}dp{2,3,4}
a/2=b/3=c/4=k
a=2k
b=3k
c=4k
2k+3k+4k=90
9k=90
k=90/9
k=10
a=2k=2x10=20
b=3k=30
c=4k=40

20+30+40=90

Answer 2

a/2=b/3=c/4=k
a=2k
b=3k
c=4k
a+b+c=90
2k+3k+4k=90
9k=90
k=90/9=10
a=2*10=20
b=3*10=30
c=4*10=40