Question
Simple interest on Rs.500 for 4 years at 6.25 % per annum is equal to the simple interest on Rs. 400 at 5 % per annum for a certain period of time. The period of time is?
Answer: Option C
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Let the required period of time be x years.
Then
500 x 4 x 6.25/100 = 400 x 5/100 × x
=> 20 x 6.25 = 20 × x
=> X = 6.25 = 625/100 = 25/4 = 6 ¼ years
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