The amount of simple interest is equal to the product of the principal times ____ times ____. October 5, 2022 by 8i9x6 (1 + rate per time period), the number of time periods (1 + rate per time period), (the number of time periods -1) rate per time period, the number of time periods rate per time period, (the number of time periods – 1) See Answer rate per time period, the number of time periods