Odpowiedzi

2009-12-09T18:06:07+01:00
Celina 70 autografów
Ania 70 - 70 × 40% = 70 - 70 x 04 = 70 - 28 =42
Basia x + 40%x = 42
1,4x = 42/:1,4
x = 30


Odp. Ania ma 42 autografy, a Basia 30