Ian invested his savings of $650 in a savings account that was earning a simple interest rate of 3.26% p.a. He also invested $2,575 in his friends business at a simple interest rate of 0.32% p.m. a. What is the simple interest rate per month that is equivalent to 3.26% p.a.? 0.05% 2.72% 0.02% 0.27% b. What was the total interest earned from both investments at the end of 14 months? $3,365.08 $140.08 $115.36 $24.72