Réponse :
p(ttc) = p(ht) + p(tva) = 20 + 1.1 = 21.1 €
ptva = 0.055 x p(ht) = 0.055 x 20 = 1.1 €
p(ttc) = p(ht) + p(tva) = p(ht) + 0.2 x p(ht) = p(ht) x 1.2 d'où p(ht) = p(ttc)/1.2
p(ht) = 21/1.2 = 17.5 €
Explications étape par étape
