An amount of money was lent by Abhishek on simple interest at x% which gets increased by 2 times after 10 years. If y amount of money is invested in ratio 3 : 2, and the larger amount of money is invested at x + 5% and the smaller amount of money is invested at r% compounded annually, then the difference between their compound interests for 2 years will be Rs. 4000. Which of the following values of r are possible to obtain the value of y more than 12,000 but less than 14,000? (i) 2% (ii) 5% (iii) 10% (iv) 12% (v) 15%
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