Question

6. In how much time will a sum of money amount to 4/3 of itself at 13 1/3% p.a.?​

Answer 1

Answer:

let the time is x years and

sum of money is Rs y

then amount is Rs 4y/3

interest=Rs(4y/3-y)=Rs (4y-3y)/3=Rs y/3

rate of interest =13 1/3%=40/3%

so,

40.y.x/3.100=y/3

=> 40xy=100y

=> 40x=100

=> x=100/40

=> x=5/2

=> x=2 1/2

so the required time us 2 1/2 years

Answer 2

Answer:

Please refer to the attachment