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CBSE Class 8 Answered

milind deposited rs 64000 in a savings scheme which fetches him interest at the rate of 71/2% compounded annually.after how many years will this sum amount to rs 79507?
Asked by sanghyasingh90 | 14 Oct, 2019, 01:52: PM
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begin mathsize 16px style Here comma space straight P space equals space Rs. space 64000 comma space straight R space equals space 7 1 half percent sign space equals space 15 over 2 percent sign comma space straight A space equals space Rs comma space 79507 To space find colon space straight N space equals space ? space We space know space that comma straight A space equals space straight P space open parentheses 1 space plus space straight R over 100 close parentheses to the power of straight N rightwards double arrow 79507 space equals space 64000 space space open parentheses 1 space plus space 15 over 200 close parentheses to the power of straight N rightwards double arrow space 79507 over 64000 equals space open parentheses 43 over 40 close parentheses to the power of straight N rightwards double arrow space open parentheses 43 over 40 close parentheses cubed space equals space space open parentheses 43 over 40 close parentheses to the power of straight N rightwards double arrow straight N space equals space 3 end style
Answered by Yasmeen Khan | 14 Oct, 2019, 03:32: PM

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CBSE 8 - Maths
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