Question

Aman earns rupees 147 as interest after 3 years at 7 % per annum how much did he invest

Answer 1

Using the formula PRT/100
Aman invest 700 rupees

Answer 2

Let Principal = X
then,
$s.i = \frac{ x \times 7 \times 3}{100} \\ 147 = \frac{x \times 21}{100} \\ x = \frac{147 \times 100}{21} \\ x = 700$
Aman invested rupees 700.

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