Question

3. A principal and its simple interest at 3*1/2% p.a. amount to 450. If the interest is2/7 times
principal, find the time.
[Ans. : * 350; 8*2/49
years)​

Answer 1

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Given Principal = 450.

Given rate of interest = 9/2%.

Given Time = 4 months = (4/12) years.

We know that Simple interest SI = PTR/100.

⇒ (450 * 4 * 9)/(100 * 2 * 12)

⇒ 16200/2400

⇒ 6.75.

Therefore, the simple interest = 6.75.

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