Find the SI on Rs. $7{,}200$ at $5\%$ per annum for $\dfrac{5}{2}$ years.

Find the SI on Rs. $7{,}200$ at $5\%$ per annum for $\dfrac{5}{2}$ years.
  1. Rs. $720$
  2. Rs. $800$
  3. Rs. $900$
  4. Rs. $1{,}080$

Solution

$\text{SI} = \dfrac{7200 \cdot 5 \cdot 2.5}{100} = \dfrac{90000}{100} = 900$.

Asked in: IMO

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