Question

At what rate a sum doubles itself in 8 year 4 months?​

Answer 1

Step-by-step explanation:

Let sum=x

ATQ, Amount=2x

S.I=2x-x

=x

Time=8+4/12 years

or 25/3 years

therefore rate= S.I×100/P×T

=x×100/x×25/3

=12%

Answer 2

Answer:

Let the Sum be 100.

Let the rate of interest be R.

Hence,100+((100*25*R)/3*100)=200

=> 25R/3=100

=>R=(100*3)/25

=>R=12 percent pa