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  1. 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 :
    1. ₹ 10,000
    2. ₹ 12,000
    3. ₹ 15,000
    4. ₹ 9,000
Correct Option: A

As the interest was compounded half-yearly,

we changed r to
r
and t to 2t.
2

∴  T = 1 year & R = 6%
Sum =
36 × 100 × 100
= ₹ 10000
6 × 6



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