Odpowiedzi

2009-11-08T14:12:52+01:00
40% z 70 = 28
70-28=42 (autografy Ani)
42-28=14 (autografy Basi)

odp.: Ania ma 42 autografy, a Basia 14.
2009-11-08T14:13:52+01:00
Celina 70 autografuf
ania 70 - 40% *70
70 -28 = 42
basia 42 - 40%*42
42 - 17=25
2009-11-08T20:02:44+01:00
Celina - 70 autografow

40% z 70= 28

70-100%
x- 60% x=(70 × 60) ÷ 100= 42
Ania - 42 autografy

42- 28=14
Basia - 14 autografow

odp. Celina ma 70 autografow, Ania 42, a Basia 14.