Answers

2014-03-16T12:48:27+05:30
LET THE PRINCIPLE BE X 
then according to the question the amount will be 2.25x
given time n=2 years 
let rate be R%
now,
     A=P[1- \frac{R}{100} ]^2
    2.25x=x[1- \frac{R}{100} ]^2
    √2.25=1- \frac{R}{100}
    1.5=1-R/100
    0.5=R/100
      R=50% ans......
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