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ATQ, we can say that Let the amount invested at compound interest be Rs. 'A'. So, amount invested at simple interest = Rs. (70000 - A) Compound interest earned in two years = A × (1.2)2 - A = Rs.0.44A Simple interest earned in two years = {(70000 - A) × 16.5 × 2} ÷ 100 = Rs. {(70000 -A) × 0.33} Then, 0.44A = (70000 - A) X 0.33 Or, 0.44A = 23100 - 0.33A Or, 0.77A = 23100 So, A = 30000 So, amount invested at compound interest = Rs.30,000
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