Răspunsuri

2014-04-27T14:34:24+03:00
Notam cu x numarul care vrem sa-l aflam.
80/100·50/100·x=1600⇔2/5·x=1600⇒2x/5=1600⇒x= \frac{1600x5 }{2} =4000
e 4000 raspunsul
Asa ..
Am gresit...Am scris repede.