A certain sum of money amounts to rs.600 in 3 years and to rs.750 in 5 years at simple interest. what is the sum ? similar sums
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It is given that the money at the end of year 5 is Rs. 750 and money at the end of year 3 is Rs. 600.
That means the simple interest earned from year 3 to year 5 ( that means in 2 years period) is (750-600) = Rs. 150
Now if the simple interest for 2 years is Rs. 150, it shall be 150/2 =Rs. 75 for one year. And simple interest for 3 years shall be 3*75 = Rs. 225
We know that money at the end of year 3 is Rs. 600 so the Initial Sum shall be 600-225 = Rs. 375
Hence the answer is Rs. 375
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