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A sum of money becomes 9 times in 20 years. Find the rate of interest. |
| Answer» APPLY this relation twice :(n - 1) x 100 = rtFirst : (2 - 1) x 100 = 20r=> r = 5%Second : (4 - 1) x 100 = 5t=> t = 300/5 = 60 yearsStep-by-step explanation:hope helps youplease mark me as brainllist | |