Question 1094726
<br>By logical analysis and basic arithmetic...<br>
{{{27/1800 = 0.015 = 1.5%}}}<br>
Since the amount of interest earned in just one quarter of a year was 1.5%, the interest rate for the whole year is 4 * 1.5%, or 6%.<br>
By formula (I = Prt)  Interest = principal times rate times time:
{{{27 = 1800(r)(1/4)}}}
{{{27 = 450r}}}
{{{27/450 = r}}}
{{{.06 = r}}}