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A company decides to set aside a certain sum at the end of each year to create a sinking fund, which should amount to ₹ 4 lakhs in 4 years at 10% p.a. Find the amount to be set aside each year? [Give - Mathematics and Statistics

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प्रश्न

A company decides to set aside a certain sum at the end of each year to create a sinking fund, which should amount to ₹ 4 lakhs in 4 years at 10% p.a. Find the amount to be set aside each year?
[Given (1.1)4 = 1.4641]

योग

उत्तर

Given, A = ₹ 4,00,000, n = 4 years, r = 10% p.a, i = `"r"/100 = 10/100` = 0.1

Now, A = `"C"/"i"[(1 + "i")^"n" - 1]`

∴ 4,00,000 = `"C"/0.1[(1 + 0.1)^4 - 1]`

∴ 4,00,000 × 0.1 = C[(1.1)4 − 1]

∴ 40,000 = C[1.4641 − 1]

∴ 40,000 = C(0.4641)

∴ C = `(40,000)/0.4641`

∴ C = ₹ 86,188.32

∴ The amount to be set aside each year is ₹ 2,00,000.

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अध्याय 2.2: Insurance and Annuity - Q.4

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