Question

The simple interest on a certain sum for 3/2 years at 10% per annum is ₹112.50. Find the sum

Answer 1

The sum of per annum is 11250.

Answer 2

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Here is your answer
Let the principal is x
R = 10%
T = 3/2 years
SI = Rs 112.50

As we know the formula

SI = PRT/100
$112.50 = \frac{x \times 10 \times 3}{2 \times 100} \\ \\ 112.50 \times 2 \times 100 = 30x \\ \\ x = \frac{11250 \times 2}{30} \\ \\ x =750$
Therefore Principal is Rs 750

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