the C.I on a sum of money for 2 years is RS.832.and the simple interest on tha same sum for the same period is RS. 800.the difference between the C.I and the S.I for 3 years will be?
1.RS.48
2.RS.66.56
3.RS. 98.56
4. none of these

plz give the short answer.

• let x be the principal and y be the interest rate. given two years S I is 800
  
  ie 2xy/100 = 800
  
  xy = 40000
  
  also given C I is 832
  
  ie x + xy/100 +( x+xy/100)y/100 - x =832
  
  substuting xy =40000 and simplifying
  
  400 + 400 +4y =832
  
  y= 8 and x=5000
  
  so calculating C I for 3 years is 1298.56 and obviusly S I is 400*3 =1200
  
  so difference is 98.56
  
  
• 11 years agoHelpfull: Yes(3) No(3)
• answer 98.56
  
  
• 11 years agoHelpfull: Yes(0) No(3)