Question

10800 for3years at 12 1/2% per annum compounded annually

Answer 1

10800(1+12/2×100)power3
10800×53/50×53/50×53/50
=12862.97
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Answer 2

ca=p(1+r/100)^n
=10800(1+25/2×100)^3
=10800(1+0.125)^3
=10800×1.125^3
=10800×1.42382812
=15377.3437
ci=ca-p
=15377.3437-10800
=4577.3437