Question

stiind ca sunt invers prportionale cu 0,5;0,(3),0,25 si suma lor este 180.

Answer 1

a,b,c i.p. 0,5 ; 0,(3) ; 0,25
a+b+c=180
a,b,c=?
0,5=5/10=1/2
0,(3)=3/9=1/3
0,25=25/100=1/4
a/2=b/3=c/4=k
a=2k
b=3k
c=4k
2k+3k+4k=180
9k=180 / :9
k= 20
a= 2×20=40
b=3×20=60
c=4×20=80
(v): 40+60+80=180