Răspuns :
100%+30%=130%
182 : 130%=182×100/130=140 lei
100%+60%=160%
140 : 160%=140×100/160=87,50 lei pret initial
182:87,5=2,08=208%
182 : 130%=182×100/130=140 lei
100%+60%=160%
140 : 160%=140×100/160=87,50 lei pret initial
182:87,5=2,08=208%
fire P , pretul initial
dupa prima marire el devine 1,6P
acest pret se mareste cu 30%din el adica cu 0,3 din el adica ajunge la
1.6P +1.6*0,3P=1,6P+0,48P=2,08 P
2,08P=182
P=182:2,08=91:1,04=9100:104=2275:26=175:2=87,5lei
verificare 87,5*1,6*1,3=140*1,3=182
adevarat, bine rezolvat
dupa prima marire el devine 1,6P
acest pret se mareste cu 30%din el adica cu 0,3 din el adica ajunge la
1.6P +1.6*0,3P=1,6P+0,48P=2,08 P
2,08P=182
P=182:2,08=91:1,04=9100:104=2275:26=175:2=87,5lei
verificare 87,5*1,6*1,3=140*1,3=182
adevarat, bine rezolvat