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Sagot :

VINS

bonjour

0.6 x 4 + 0.7 x 7 + 0.75 x 8 + 0.8 x 5 + 0.85 x 3 + 0.9 x 1 + 1 x 2 + 1.1 x 1  

= 2.4 + 4.9 + 6 + 4 + 2.55 + 0.9 + 2 + 2.2

= 24.95

moyenne = 24.95 :  30 = 0.831666.... €

étendue = 1.1 - 0.6 =  0.5

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