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Tomek - 70:100=0.7
0,7*40=28
70-28= 42 (Tomek ma 42 karty)
Olek- 42:100=0,42
0,42*40=16
42-16=26 (Olek ma 26 kart)
7 *4 = 28 - tyle to 40%
70 - 28= 42
42 - 28= 14
Odp. Tomek ma 42 karty, a Olek ma 14 kart.