Anil invests an amount for 2 years at the rate of 15% per annum at simple interest.Had he invested in a scheme in which interest was compounded yearly he would have got Rs.450 more. Find the principal

(a) Rs.8,000
(b) Rs.15,000
(c) Rs.20,000
(d) Rs.10,000

• difference, D between compound and simple interest for 2 years,
  D=P*(R/100)^2
  where P is the principal
  R is rate of interest
  
  so here,
  450=P*(0.15)^2
  => P=20000 (ans. c)
• 8 years agoHelpfull: Yes(10) No(0)
• CI-SI=P(R/100)^2
  
  AS GIVEN CI-SI=450
  
  450=P(15/100)^2
  450=P(3/20)^2
  P=450(20/3)^2
  P=20000
• 8 years agoHelpfull: Yes(2) No(0)
• ans : C (20000)
  Because SI of 20000 at a rate of 15% per annum for 2 years is 26000
  and CI of 20000 at a rate of 15% per annum for 2 years is 26450
  so, in question it is said that compounded year He had got 450 more than SI so 26450-26000=450
  answer can found by options method
• 8 years agoHelpfull: Yes(0) No(0)
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• 7 years agoHelpfull: Yes(0) No(0)