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<blockquote data-quote="zid2021" data-source="post: 27155742" data-attributes="member: 578907"><p>What you get here is a geometric series with common ratio equal to 1+r. Plug that into the geomwtric series summation formula and you get that formula.</p><hr /><p>For the original question think of it as 5 separate investments of Rs 100 for time periods of 5,4,3,2 and 1.</p><p></p><p>So,</p><p> 1st investment = 100(1.1^5)</p><p> 2nd investment= 100(1.1^4)</p><p> 3rd investment= 100(1.1^3)</p><p> 4th investment= 100(1.1^2)</p><p> 5th investment= 100(1.1^1)</p><p></p><p>Then,</p><p>Total accumulated value = 1st in +2nd in+...+5th in</p><p></p><p>You get the same answer using the formula.</p><p>------ <span style="font-size: 10px">Post added on [DATETIME="UT"]1638720537[/DATETIME]</span></p></blockquote><p></p>
[QUOTE="zid2021, post: 27155742, member: 578907"] What you get here is a geometric series with common ratio equal to 1+r. Plug that into the geomwtric series summation formula and you get that formula. [HR][/HR] For the original question think of it as 5 separate investments of Rs 100 for time periods of 5,4,3,2 and 1. So, 1st investment = 100(1.1^5) 2nd investment= 100(1.1^4) 3rd investment= 100(1.1^3) 4th investment= 100(1.1^2) 5th investment= 100(1.1^1) Then, Total accumulated value = 1st in +2nd in+...+5th in You get the same answer using the formula. ------ [SIZE=2]Post added on [DATETIME="UT"]1638720537[/DATETIME][/SIZE] [/QUOTE]
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