Find the compound interest on ₹ 1000 at the rate of 20% per annum for 18 months when interest is compounded half-yearly.

Find the compound interest on ₹ 1000 at the rate of 20% per annum for 18 months when interest is compounded half-yearly.

• A. ₹ 331 
• B. ₹ 1331 
• C. ₹ 320 
• D. ₹ 325 

 

The correct answer is option A. 331. Can you explain this answer in the comments?

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