§2
Spaardepostio = enkelvoudige rente = elk jaar dezelfde rente
Enkelvoudige rente (per jaar) = rentepercentage / 100 x spaarbedrag
Rente was €73,50, dus €14,70 per jaar. (€73,50/5 = €14,70)
€14,70 = rentepercentage / 100 x €3500
€14,70 / €3500 x 100 = rentepercentage = 0,42