Question 175: The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is Re. 1. The sum (in Rs.) is:
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compound-interest
Let the sum be Rs.x. Then,C.I. =x1 +42-x=676x-x=51x.100625625S.I. =xx 4 x 2=2x.1002551x-2x= 162525x= 625.