Arithmetichard · Past Paper
If compound interest is paid half-yearly, the compound amount formula is:
AA = P(1 + R/100)^T
BA = P(1 + R/200)^2T
CA = P(1 + R/400)^4T
DA = P(1 + 2R/100)^T/2
✓ Correct Answer: B — A = P(1 + R/200)^2T
Half-yearly means interest is added twice a year, so rate is R/2 and time is 2T.
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