Time line
Payments made are cash outflows. They are represented with a negative sign.
a. PMT = -50
n = 8
PV = 350
FV = 0
CPT I/Y
I/Y = 3.066642%
Periodic rate = 3.066642%
b. Annual percentage rate, APR = Periodic rate * 2
APR = 3.066642% * 2
APR = 0.06133284
APR = 6.133284%
c. Effective annual rate, EAR = (1 + Periodic rate)^2 - 1
EAR = (1 + 3.066642%)^2 - 1
EAR = 1.0622732693 - 1
EAR = 0.0622732693
EAR = 6.22732693%
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