Réponse:
a.
coeff . multiplicateur = 100/100 + 40/100 = 1 + 0.4 = 1.4
b.
coeff multiplicateur = 100/100 - 30/100 = 1 - 0.3 = 0.7
c.
coeff multiplicateur = 100/100 + 200/100 = 1 + 2 = 3
d.
coeff multiplicateur = 100/100 - 50/100 = 1 - 0.5 = 0.5
e.
coeff multiplicateur = 100/100 + 1/100 = 1 + 0.01 = 1.01