Răspunsuri

2014-08-30T19:19:54+03:00
X-nr problemelor
x=80

40% din x=  40/100 * x=  10/25 * x= 2/5 * x=   2x/5 -a rezolvat in primele 3 zile

2x/5= 2*80/5= 2*16=32 probleme a rezolvat

80-32=38 probleme mai are de rezolvat
1 5 1
2014-08-30T20:02:31+03:00

t=80
a=40%t=80*40/100=32
b=60%t=t-a=80-32=48

1 5 1