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Charan opened a cumulative time deposit account with a bank. For `1(1)/(2)` years, he deposited Rs. 800 per month. He received in interest of Rs. 1140. find the rate of interest . (in `%` per annum)A. 10B. 9C. 8D. 12 |
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Answer» Correct Answer - A Let the rate of interest be `R%` per annum time period `=1(1)/(2)years=18` months. Interest received by him (in Rs.) =800 `((18)(19))/(2)((1)/(12))((R)/(100))=R[(8)((9xx19)/(12))]=R((72xx19)/(12))=114implies114R=1140` (given) R = 10. |
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