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Calculate the Amount and the Compound Interest for the Following, When Cornpounded Half-yearly: - Mathematics

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Question

Calculate the amount and the compound interest for the following, when cornpounded half-yearly: 

Rs 25,000 for `1 1/2` years at 12 % 

Sum

Solution

P = Rs 25,000 ;  t =`1 1/2` years ; r = 12 % p.a. = 6 % half-early.

`"A" = "P" (1 + "r"/100)^"n"` 

A = Rs 25000 `(1 + 6/100)^2 (1 + 12/100)^(1/2)`

=Rs 25,000 x 1.06 x 1.06 x `(1 + 1/2 xx 12/100)`

= Rs 25, 000 x 1. 06 x 1.06 x 1.06

= Rs29, 775.40 

C.l. = A - P

= Rs (29,775.40 - 25, 000)

=Rs 4,775.40

Hence, Amount= Rs 29,775.40 and C.I. =Rs 4,775.40 

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Use of Formula
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Chapter 1: Compound Interest - Exercise 1.6 [Page 19]

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Frank Mathematics - Part 2 [English] Class 10 ICSE
Chapter 1 Compound Interest
Exercise 1.6 | Q 2.2 | Page 19

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