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Sagot :

AYUDA

K = C0 = 3000

et t = 2%

intérêts simples

donc chq année = I = 3000x2% = 60€

a

C1 = 3000 + 60 = 3060

C2 = 3060 + 60 = 3120 = 3060 + 2x60

C3 = 3120 + 60 = 3180 = 3060 + 3x60

b

comme C2 - C1 = C3 - C2 = 60

=> r = 60

avec Cn = CO + n  x r

c

C1 = CO + r

=> Cn+1 = Cn + r

d  

C10 = 3000 + 10 x 60 = 3600

capital acquis au bout de 10 ans de placement

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