Explications étape par étape:
1) 15 × (1 + 15%) = 15 × (1 +15/100) = 15 × (1 + 0,15) =
15 × 1,15 = 17,25€.
2) x × (1 + 0,12) = 395€
x × 1,12 = 395
x = 395 ÷ 1,12 = 352,67€
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Explications étape par étape:
1) 15 × (1 + 15%) = 15 × (1 +15/100) = 15 × (1 + 0,15) =
15 × 1,15 = 17,25€.
2) x × (1 + 0,12) = 395€
x × 1,12 = 395
x = 395 ÷ 1,12 = 352,67€