Question
Mr. X invested Rs. 800 in two schemes, A and B in the
ratio of 7:3, respectively. Scheme A and B are offering simple interest at rate of 6% per annum and 10% per annum. Find the total interest obtained from both schemes after 2 years.Solution
Amount invested in scheme A = (7/10) × 800 = Rs. 560 Amount invested in scheme B = (3/10) × 800 = Rs. 240 Interest earned from scheme A = 560 × 6% × 2 = Rs. 67.2 Interest earned from scheme B = 240 × 10% × 2 = Rs. 48 Therefore, required total interest = 67.2 + 48 = Rs. 115.2

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