Răspuns :
80%............60
100%...........x
x=100%*60/80%
x=75
b) 50%.....20
100%.........x
x=100%*20/50=40
c) 90%...........40
100%................x
x-100%*40/90%=44,(4)
100%...........x
x=100%*60/80%
x=75
b) 50%.....20
100%.........x
x=100%*20/50=40
c) 90%...........40
100%................x
x-100%*40/90%=44,(4)
50--------20
100------x
x=2000/50=40
90--------40
100-------x
x=4000/90=44,4444....
100------x
x=2000/50=40
90--------40
100-------x
x=4000/90=44,4444....