Question

A sum of money invested at simple interest
becomes 306 at the end of 5 years. If the interest is 9/25
part of the principle, the rate of interest
per annum is:​

Answer 1

Answer:

39.34%

Step-by-step explanation:

say principle=100

and

int=9*p/25

so int=9*100/25=36

so in 5 years 100 becomes

100+(36*5)

=100+180

=280

so for 280 (=amount)

int=36

and for 306

int=(306/280)*36

=39.34%