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12A certain amount of money amounts to 4400 in two years and to Rprincipal and rate of interest.(Hint: One year's interest is 4600- 4400 200)4600 in three years. Find the |
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Answer» Amount in 2 years = Rs 4400Amount in 3 years. = Rs 4600Therefore Interest in 1 year = Rs(4600-4400)=Rs 200Therefore Interest in 2 years = Rs (200 X 2)= Rs 400Therefore principal = Amount - Interest= Rs(4400-400)= Rs 4000 Therefore let rate of interest be = x % p.aTherefore ATQ 200 = 4000 X 1 X x / 100Therefore x = 5 Therefore Rate % per annum = 5 % per annum Ans. Principal = Rs 4000Rate = 5% per annum |
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