A person invested 3 times as much money at 5% as he had invested at 2% per annum simple interest.Further, he invested Rs.6000 more at 3% then he had invested at 2%.If he total interest from the three investments after a year is Rs. 980, then the total amount he invested is
A
Rs.17600
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B
Rs.18000
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C
Rs.20000
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D
Rs.26000
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Solution
The correct option is DRs.26000 Let the amount invested at 2% be rupees x. Given the interest from 3 investments after 1 year ∴3x×5100+2x100+(x+6000)×3100=980 20x+18,000=98,000 20x=80,000 x=4000 ∴Totalamountheinvested=3x+2x+3x+6000=26000