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Find the sum, if compound interest is Rs 618 for 2 years at 6 % per annum.1. Rs. 5,0002. Rs. 6,0003. Rs. 7,0004. Rs. 8,0005. Rs. 1,000 |
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Answer» Correct Answer - Option 1 : Rs. 5,000 Given: C.I = Rs 618 T = 2 years R = 6 % per annum Formula used: C.I = P[(1 + r %)t – 1] 618 = P[(1 + 6 %)2 -1] ⇒ 618 = P[(106/100)2 – 1] ⇒ 618 = P [(11236/10000) – 1 ] ⇒ 618 = P [(11236 – 10,000)/10,000] ⇒ 618 = P [ 1236/10,000] ⇒ [(618 × 10,000)/1236] = P ⇒ 5000 = P ∴ The principal is Rs. 5000 |
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