If the difference between the compound interest, compounded every six months, and the simple interest on a certain sum of money at the rate of 12% per annum for one year is 36, the sum is :
Options:
A . 9,000
B . 10,000
C . 15,000
D . 12,000
Answer: Option B Answer: (b)Easy TrickAs the interest was compounded half-yearly,we changed r to $r/2$ and t to 2t.T = 1 year & R 6%Sum = ${36 × 100 × 100}/{6 × 6}$ = Rs.10000
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