a$)$ Calculate the time in days for $$1500$ to accumulate :to $$1550$ at

A Simple rate of interest of $5\%$ per annum $(1).$A force of interest of $5\%$ per annum $(2)$

$i^{(4)},,d^{(2)}$ b$)$ Given that $i=0\mathrm{.}0625,$ find the values of