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  1. The difference between the compound interest and simple interest on a certain sum for 2 years at 10% per annum is ₹ 300. Find the sum.
    1. ₹ 31,000
    2. ₹ 31,500
    3. ₹ 30,000
    4. ₹ 30,500
Correct Option: C

Given in question , Difference = C.I. - S.I. = ₹ 300 , Time = 2 years , Rate = 10%
Using the given formula ,

Difference =
PR2
10000

⇒  300 =
P × 10 × 10
10000

⇒  P = 300 × 100 = ₹ 30000



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