A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is?

• amount incrieased in 1 year = 854-815=39
  in simple interest every year amount incriease will be same
  so for 3 years incriease amount = 3*39=117
  sum=815-117=698
• 11 years agoHelpfull: Yes(22) No(0)
• S.I. for 1 year = Rs. (854 - 815) = Rs. 39.
  
  S.I. for 3 years = Rs.(39 x 3) = Rs. 117.
  
  Principal = Rs. (815 - 117) = Rs. 698.
• 11 years agoHelpfull: Yes(7) No(0)
• 698..IS THE ANS
• 11 years agoHelpfull: Yes(1) No(1)
• one year interest is =854-815=39
  total of interest for 3 years is 117
  sum=825-117=698
• 11 years agoHelpfull: Yes(1) No(0)
• Let c.p = x and profit rate is r%.
  so, ASP 815=x*(1+r%)^3 and 854 =x*(1+r%)^4
  by solving we have r = 4.7%
  putting d value at any equ we have x = rs.710(apx)
• 11 years agoHelpfull: Yes(0) No(8)