Question

if interests is compounds quarterly, then rate will be _ of the annual rate​

Answer 1

If the rate of interest is annual and the interest is compounded quarterly (i.e., 3 months or, 4 times in a year) then the number of years (n) is 4 times (i.e., made 4n) and the rate of annual interest (r) is one-fourth (i.e., made r4).