Question

Find the compound interest on Rs. 1000 at the rate of 20% per annum for 18 month when interest is compounded half yearly.
A.Rs. 331
B.Rs. 1331
C.Rs. 320
D.Rs. 325

Answer 1

______✨ HEY MATE ✨______

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SOLUTION :-
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Given, principal, P = Rs. 1000
Compound rate, R = 20% per annum = 20/2 = 10% half-yearly
Time = 18 month = 3 half-years
Amount,
A = {P*[1+ (R/100)]n }
= {1000*[1+(10/100)]3}
= {(1000*11*11*11/10*10*10)}
A = Rs. 1331
Hence, compound interest = Rs. 331.

So , Option (A) is the right answer ✔️

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Answer 2

★${\textbf{Hey..!!}}$★



P = Rs. 1000
Compound rate, R = 20% per annum = 20/2 = 10% half-yearly
Time = 18 month = 3 half-years
Amount,
A = {P×[1+ (R/100)]n }
= {1000×[1+(10/100)]3}
= {(1000×11×11×11/10×10×10)}
A = Rs. 1331
Hence, compound interest = Rs. 331.