Răspunsuri

2014-07-11T13:30:52+03:00
X-pretul initial

10% din x= 10/100*x= 1/10*x=  x/10 -reducerea

x-x/10=  (10x-x)/10=  9x/10 -restul

9x/10=27

x=10*27/9
x=10*3
x=30 lei costa produsul initial
2014-07-11T13:31:24+03:00
100%-10%=90%
90%...........27lei
100&..........x lei
___________--
x= 100x27/90
x= 2700:90
x=30 lei