Răspunsuri

2014-05-21T22:57:17+03:00
X-pretul initial
25% din x= 25/100*x= 1/4*x=x/4 -majorarea

x+x/4= (4x+x)/4=5x/4-noul pret

x................1kg carne
5x/4............y    sunt invers proportionale

y=x*1/ 5x/4
y=x/ 5x/4
y=x * 4/5x
y=4/5
y=0,8 kg
9 4 9