Question

The simple interest on an amount at 8% per annum is 1200 in 6 years. At the end of 2 years , at the rate of 10% per annum , this amount be triple.
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Answer 1

Answer:

576

Step-by-step explanation:

Given:

Principal = Rs. 1200

Time = 8 months = (8/12) = 2/3 years

Rate = 6 paise per rupee

Formula used:

SI = (P × R × T)/100

Where, SI = Simple Interest, P = Principal, R = Rate, T = Time

Calculation:

SI on Re 1 for 1 year = (6 × 12) paise

⇒ 72 paise

SI on Rs. 100 for 1 year = (72/100) × 100

⇒ Rs. 72

So, Rate = 72%

According to the question

SI = (1200 × 72 × 2)/(100 × 3)

⇒ 4 × 72 × 2

⇒ Rs. 576

∴ The simple interest earned is Rs. 576.

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