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Worked Examples · Example 3

Q.Find the present value of an annuity of ₹2,000 payable at the end of each year for 3 years, if money is worth 5% per annum compounded annually.

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✓ Free question

Method 1 — Present-value annuity formula.

P=2000P = 2000, i=0.05i = 0.05, n=3n = 3.

V=Pleft[dfrac1−(1+i)−niright]=2000left[dfrac1−(1.05)−30.05right]V = P\\left[\\dfrac{1-(1+i)^{-n}}{i}\\right] = 2000\\left[\\dfrac{1-(1.05)^{-3}}{0.05}\\right]

(1.05)−3=dfrac11.157625=0.863838;Rightarrow;dfrac1−0.8638380.05=dfrac0.1361620.05=2.72325(1.05)^{-3} = \\dfrac{1}{1.157625} = 0.863838 \\;\\Rightarrow\\; \\dfrac{1-0.863838}{0.05} = \\dfrac{0.136162}{0.05} = 2.72325

V=2000times2.72325=5446.50V = 2000\\times2.72325 = 5446.50

✓Final answer

The present value of the annuity is ₹5,446.50 (approximately), confirmed below by discounting each payment separately.

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