Bonsoir,
2*17 +3*13 + 15+ 2*18+ 3*16
= 34+39+15+36+48
= 172
2+3+1+2+3 = 11
172/11 => 15,64 de moyenne
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Bonsoir,
2*17 +3*13 + 15+ 2*18+ 3*16
= 34+39+15+36+48
= 172
2+3+1+2+3 = 11
172/11 => 15,64 de moyenne