1. 3 duminici in data de : 2, 16, 30
19 cade miercuri
2. 3 pix + 4p = 34, inmultim cu 2
2 pix + 6p = 46, inmultim cu 3
6 pix + 8 p = 68
6 pix + 18 p = 138, le scadem
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/ 10 p = 70
p = 70 : 10
p = 7 lei penarul
2 pix + 6 * 7 = 46
2 pix = 46 - 42
2 pix = 4
1 pix = 2 lei