Gina loaned Gerry $300 at an interest rate of 10 percent a year. How much interest will Gina get if Gerry pays Gina after 6 months

Answer 1

First, we need to determine the interest for 6 months. Since the interest rate is 10% per year, we divide it by 2 to get the interest rate for 6 months, which is 10%/2 = <<10/2=5>>5%.
To calculate the interest amount, we multiply the principal (loan amount) by the interest rate: $300 * 5% = $<<300*5*.01=15>>15.
Therefore, Gina will receive $15 in interest if Gerry pays after 6 months. Answer: \boxed{15}.