If interest on Rs x for 2 years at R% pe...

If interest on Rs `x` for 2 years at R% per annum is Rs 80, then interest on Rs `2x` for one year at R% per annum is (a) Rs 160 (b) Rs 40 (c) Rs 80 (d) Rs 120

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If interest on Rs. X for 2 years at R% p.a. is Rs. 80, then interest on Rs. 2x for 1 year at R% p.a. is____.

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The difference between the interest obtained for Rs 1000 at 12% per annum for 3 years and that for Rs 1500 at 8% per annum for 1(1)/(2) years is Rs 360 (b) Rs 300 Rs 180 (d) Rs 200

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