an amount of 64 Rs has to become 125 in 3 years in compound interest , find the rate of interest?

• use formual amount= p(1+r/100)^n
  p ====principal n==no of years r===rate of interest
  125===64(1+r/100)^3
  r===25
• 13 years agoHelpfull: Yes(25) No(1)
• Amount = P(1+r/100)^n where r is annual rate of interst in percent.
  125 = 64(1+r/100)^3
  125/64 = (1+r/100)^3
  (1+r/100)=5/4
  100+r=125
  r=125-100=25
  
  so rate of interest = 25%
• 13 years agoHelpfull: Yes(8) No(1)
• ans : 0.25(1%4)
  formula :
  Final Amount(125)=Principal(63)*(1+i)^years(3)
• 13 years agoHelpfull: Yes(0) No(3)
• P=64,T=3,S.I=(125-64)=61
  
  S.I=P*R*T/100
  
  61=64*R*3/100
  
  R=6100/64*3
  R=31.77
  
• 13 years agoHelpfull: Yes(0) No(11)