Schimbam putin topica
cat la suta reprezinta 17 din119?
sau 17din119 cat la suta reprezinta?
cat...........x
la .............--
suta ..........100
reprezinta....=
17...............17
din..............--
119.............119
x/100=17/119
produs mezi=produsextremi
119x=17*100
x=1700/119
x=14,2857(142857)%≈14,29%
verificare 0,1429*119=17,0051 o aproximare in plusd de 5 miimi
bine rezolvat
