A certain sum of money at simple interest amounted Rs.840 in 10 years at 3% per annum, find the sum?  Pick: A) 277 B) 262 C) 298 D) 646 E) 267
840 = P [1 + (10*3)/100]   P = 646   Answer: 646
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A certain sum of money at simple interest amounted Rs.840 in 10 years at 3% per annum, find the sum?