simple interest on a certain sum of money is 4/9 of the sum. Find the rate%at the time if both are numerically equal
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Let rate = R% and time = R years. Then, (x*R*R)/100=4x/9 or R2 =400/9 or R = 20/3 = 6 2/3. Rate = 6 2/3 % and Time = 6 2/3 years = 6 years 8 months.
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