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Verified answer
P1 = 1.500.000p2 = 1.450.000
∆p = 1.450.000 - 1.500.000 = -50.000
q1 = 30.000
q2 = 31.000
∆q = 31.000 - 30.000 = 1.000
e = ∆q/∆p × p1/q1
= 1.000/-50.000 × 1.500.000/30.000
= -1
= |-1|
= 1