What is the rate of simple interest for the first 4 year if the sum of rs 360 becomes rs 540 in 9 year and the rate of interest for the last 5 year is 6%?

• Ans= 5%
  If the rate for first 4 year=R
  360+(360*4*R/100)+(360*5*6/100)=540
  46800+1440R=54000
  So R=7200/1440=5
• 11 years agoHelpfull: Yes(2) No(0)
• answer is 5%
  Initial amount is 360 and the amount after 9 years is 540.. so the difference is the simple interest i.e 180..
  si=ptr/100 by using this formula...
  180=((360*4*r)+ (360*5*6))/100
  on solving this we get the rate of interest for the first 4 years... i.e 5%
• 11 years agoHelpfull: Yes(0) No(1)