writing equations here. your salary after a 5% salary increase if your salary before the increase was s. is the answer s-.05+s? how do i include the "if" in the equation? Please explain this to me

Question

writing equations here.  your salary after a 5% salary increase if your salary before the increase was s.  is the answer  s-.05+s?  how do i include the "if" in the equation?  Please explain this to me

anonymous · Answer

I dont think that you have to do anything with that if
s*1.05=x
where x is your new salary 
or
s+s*0.05=x 
(but this is the same)

anonymous · Answer

why 1.05 when the problem stated 5%?