Question
A certain sum of money becomes 6000 in 6 years and Rs.
6240 in 10 years at any certain rate of simple interest. Find the principal amount.Solution
Simple interest for 4 years = 6240 – 6000 = Rs. 240 Simple interest for 1 year = 240/4 = Rs. 60 Simple interest for 6 years = 60 × 6 = Rs. 360 So, required principal amount = 6000 – 360 = Rs. 5640
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