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Sagot :

Bonjour,

a)

5kg coûtent moitié moins: (10/2=5)

14/2 => 7€

b)

10 +5

=> 14 +7 => 21€

c)

14/10 => 1,40€

d)

7 * 1,40 => 9,80€

4kg -> 4,80 €

1kg -> 4,80/4 =>1,20€

3kg -> 1,20 * 3 => 3,60€

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