Answers

2015-12-12T18:33:14+05:30
See..Now on during calculating interest for 4th yr, it will be calculated on Rs.800 (as simple ineterest)
Time= 4-3 = 1 year
Amount= Rs.800
S.I. on Rs 800 for 1 year =840-800= 40
So,
S.I.= ptr/100
Rate = (100*40)/(800*1) = 5%
Option-C
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