Question

the simple interest on a sum of money is 4/9 of the principal and the number of years is equal to the rate percent per annum.what is the rate per cent per annum?
​

Answer 1

Answer:

6.66%

Step-by-step explanation:

i =(4/9)P=n*r

so r=(4/9)*P/n

and

r=n

so

n=(4/9)*P/n

or

n^2=(2^2/3^2)*P

Say P=100

so

n^2=(2^2/3^2)*100

Taking square roots on both sides,

n=(2/3)*10

=r

=6.66%

and

n=6+(2/3) years

=6y+(2*12/3)months

=6y and 8 mo