Question 502983
Since there are no additional details, lets assume that the interest rate is an annual interest rate and that it is simple interest - no compounding.  If the interest rate is 10% per year (12 months) that becomes 12.5% for 15 months

10% * 15/12 = 12.5%

Multiply that by the $5000

$5000 * 12.5/100 = $625

So the simple interest at that annual rate would be $625