Question

principal=4096,rate=10%,time=18 months . find CI and INTEREST is compounded half yearly

Answer 1

Given, principal =₹4096
Rare of interest=10%,it is compounded half yearly so, 10%/2=5%
Time=18 months=3 half years
First of all =amount=4096(1+5/100)^3
4096(1+1/20)^3
4096(21/20)^3
4096×21×21 ×21 /20×20 ×20 =₹4741.63
Therefore C. I=4741.63-4096=₹645.63
I hope it is the right answer..

Answer 2

Answer:

Given, principal =₹4096

Rare of interest=10%,it is compounded half yearly so, 10%/2=5%

Time=18 months=3 half years

First of all =amount=4096(1+5/100)^3

4096(1+1/20)^3

4096(21/20)^3

4096×21×21 ×21 /20×20 ×20 =₹4741.63

Therefore C. I=4741.63-4096=₹645.63

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