A Man Invests Rs. 9600 at 10% per Annum Compound Interest for 3 Years. Calculate : (I) the Interest for the First Year. (Ii) the Amount at the End of the First Year. (Iii) the Interest Fo - Mathematics

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Sum

A man invests Rs. 9600 at 10% per annum compound interest for 3 years. Calculate :
(i) the interest for the first year.
(ii) the amount at the end of the first year.
(iii) the interest for the second year.
(iv) the interest for the third year. the interest for the first year.

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Solution

Principal (P) = Rs.9600

Rate (R) = 10% p.a.

Period (n) = 3 years

(i) ∴ Interest for the first year =`"PRT"/100`

`=(9600xx10xx1)/100`

= Rs.960

(ii) Amount at the end of first year

= P + S.I.

= Rs.9600 + 960

= Rs.10560

(iii) Principal for the second year = Rs.10560

Interest for the second year =`(10560xx10xx1)/100`

= Rs.1056

∴ Amount after second year = Rs.10560 + 1056 = Rs.11616

(iv) Principal for the third year = Rs.11616

Interest for the third year =`(11616xx10xx1)/100`

= 116.16 × 10

= Rs.1161.60

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Chapter 9: Interest - Exercise 9 (C) [Page 114]

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Selina Concise Mathematics Class 8 ICSE
Chapter 9 Interest
Exercise 9 (C) | Q 10 | Page 114
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