Question

simple interest on a certain sum at a certain anuualrate of intest is 25/16 of the sumif the numbers respectingrate per cent and time in years be equal,then rate per cent annually is plz tell ans now only I have last point plz say with solution plz don't give irrelevant ans plz
u don't know means its k plz say ans if u know means​

Answer 1

Si= PRT/100

now if sum is 25/16 then si is 25/16 - 1 = 9 /16

and given r = t

so

formula becomes

si = pr^2/100

9/16P = P r^2 /100

r = 30/4 = 7.5 %