Arithmeticmedium · Past Paper
If the compound interest on a certain sum for 2 years at 10% is Rs 420, find the principal.
ARs 2000
BRs 3000
CRs 4000
DRs 5000
✓ Correct Answer: A — Rs 2000
CI = P[(1+R/100)^T - 1] => 420 = P[(1.1)^2 - 1] => 420 = 0.21P => P = 2000.
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