Bonjour je n’est pas compris l’exercice

Bonjour,

On pose x = Total HT

20% de total HT = 20/100 × total HT = 0,2x

donc 0,2x = 3,96 => x = 3,96/0,2 = 19,80€

Total HT = 19,80€

Total HT/Prix kwh = consommation kWh

Consommation = 19,80/0,12 = 165 kWh

Total consommation TTC = Total HT + TVA = 19,80 + 3,96 = 23,76€

TVA 5,5% abonnement HT =5,5/100×14 = 0,77€

Total abonnement TTC = Abonnement HT + TVA Abonnement = 14 + 0,77 = 14,77€