A simple interest earned on a certain amount is doubled the money when invested for 15 years.what interest rate is offered?
a)26.66%
b)12%
c)30%
d)13.33%

• correct option is (d) i.e. 13.33 %
  
  p*r*15/100=2p
  
  on solving it, we get 13.33 %
• 7 years agoHelpfull: Yes(21) No(0)
• As we know that p*r*t/100=I so p*r*15/100=2p so r=13.33%
• 7 years agoHelpfull: Yes(3) No(0)
• we know that the ..... p*r*t/100...so p*r*15/100 =2p....13.333
• 7 years agoHelpfull: Yes(2) No(0)
• SI =P*N*R/100
  here interest is doubled for 15years
  here n=15
  so that,
  P*15*R/100=2P
  Hence 26.66%
  26.66%
• 7 years agoHelpfull: Yes(1) No(5)
• si=pnr%100
  then n=15,
  (p*15*r)/100=2p
  so,we get 13.33%
• 7 years agoHelpfull: Yes(1) No(0)
• correct option is d.
  si=p*r*t/100
  2p=p*r*15/100
  solving we get 13.33%
• 7 years agoHelpfull: Yes(1) No(0)
• (P*R*15)/100= 2P
  R= 13.33%
• 7 years agoHelpfull: Yes(1) No(0)
• SI= 2p
  P*15*r/100=2p
  r=13.13%
• 7 years agoHelpfull: Yes(1) No(0)
• 13.33%
  2p=p*r*15/100
  r=13.333
• 6 years agoHelpfull: Yes(0) No(0)
• Ans :13.33
• 5 years agoHelpfull: Yes(0) No(0)
• S.I=(P*T*R)/100
  GIVEN T=15
  (P*15*R)/100=2P
  P WILL BE ELEMINATED.
  R=(100*2)/15
  R=13.33
• 5 years agoHelpfull: Yes(0) No(0)
• let p =x;
  s.i=p*R*T/100;
  so 2x=x*R*15/100;
  r=13.33%;
• 5 years agoHelpfull: Yes(0) No(0)