Question 151274
Interest formula is given by
{{{FV = PV(1+r)^n}}}
You are asked to find original investment, given the interest for a single year.
{{{Interest = PV(r)}}}
{{{117 = PV(0.045)}}}
{{{117/0.045 = PV}}}
{{{2600 = PV}}}


2)
{{{FV = PV(1+r)^n}}}
{{{3328 = PV(1+0.04)^1}}}
{{{3328/1.04 = PV}}}
{{{3200 = PV}}}