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Anil invested a sum of money at a certain rate of simple interest for a period of five years. Had he invested the sum for a period of eight…

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Anil invested a sum of money at a certain rate of simple interest for a period of five years. Had he invested the sum for a period of eight years for the same rate, the total intrest earned by him wou
  • A6%
  • B9%
  • C12.5%
  • DCannot be determined
Correct answer: D
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CCommunity
Cannot be determined

Let the sum be Rs.P. Let the rate of interest be R% p.a.
(P)(8)(R)/100 = [1 + 6/100][ (P)(5)(R) /100] = 1.6{5PR/100]
8PR/100 = 8PR/100 which is anyway true.
R cannot be found.