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Sagot :

Bonjour,

a)

en 4h -> 4*4 => 16km

En 2h30 ->  4+4+2 => 10km

b)

t =d/v

c)

t = 4

t= 20/4 => 5h

Exercice 2

a)

b= r-c

b)

(3,50 * 30 )-183 = -78

Il perd 78€

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