Question
A man invests some money partly in 9% stock at 96 and partly in 12% stock at 120. To obtain equal dividends from both, he must invest the money in the ratio:
Answer: Option D
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For an income of Re. 1 in 9% stock at 96, investment = Rs. \(\left(\frac{96}{9}\right)\) = Rs. \(\frac{32}{3}\)
For an income Re. 1 in 12% stock at 120, investment = Rs. \(\left(\frac{120}{12}\right)\) = Rs. 10.
Therefore Ratio of investments = \(\frac{32}{3}\) : 10 = 32 : 30 = 16 : 15.
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