Duration

	A	B	C	D	E	F	G	H
1	Duration
2
3
4
5	Interest rate	0,03
6			1/(1+$B$5)^An	Bn*Cn	Dn*An	sum(En)	sum(Dn)	F8/G8
7	Periods	CF	Actualization Factor	CF actualized	Cfta x t	Num	Den	Duration
8	1	40	0,9708737864	38,83495146	38,83495146	5764,64107	1054,171914	5,468406994
9	2	40	0,9425959091	37,70383637	75,40767273
10	3	40	0,9151416594	36,60566637	109,8169991
11	4	40	0,8884870479	35,53948192	142,1579277
12	5	40	0,8626087844	34,50435138	172,5217569
13	6	1040	0,8374842567	870,983627	5225,901762
14
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100